alirezaaminzadeh/secembed-pairs huggingface dataset:
Query: alert when Detects Microsoft Excel loading an Add-In (.xll) file from an uncommon location
Matching passage: Sigma rule: Detects Microsoft Excel loading an Add-In (.xll) file from an uncommon location. Logsource: windows / image_load. Rule: title: Microsoft Excel Add-In Loaded From Uncommon Location id: af4c4609-5755-42fe-8075-4effb49f5d44 related: - id: c5f4b5cb-4c25-4249-ba91-aa03626e3185 type: derived status: test description: Detects Microsoft Excel loading an Add-In (.xll) file from an uncommon location references: - https://www.mandiant.com/resources/blog/lnk-between-browsers - https://wazuh.com/blog/detecting-xll-files-used-for-dropping-fin7-jssloader-with-wazuh/ author: Nasreddine Bencherchali (Nextron Systems) date: 2023-05-12 tags: - attack.execution - attack.t1204.002 logsource: category: image_load product: windows detection: selection: Image|endswith: \excel.exe ImageLoaded|contains: - \Desktop\ - \Downloads\ - \Perflogs\ - \Temp\ - \Users\Public\ - \Windows\Tasks\ ImageLoaded|endswith: .xll condition: selection falsepositives: - Some tuning might be required to allow or remove certain locations used by the rule if you consider them as safe locations level: medium
Near-miss passage: Sigma rule: Detects the execution of Notepad to open a file that has the string "password" which may indicate unauthorized access to. Logsource: windows / process_creation. Rule: title: Notepad Password Files Discovery id: 3b4e950b-a3ea-44d3-877e-432071990709 status: experimental description: Detects the execution of Notepad to open a file that has the string "password" which may indicate unauthorized access to credentials or suspicious activity. references: - https://thedfirreport.com/2025/02/24/confluence-exploit-leads-to-lockbit-ransomware/ - https://intel.thedfirreport.com/eventReports/view/57 author: The DFIR Report tags: - attack.discovery - attack.t1083 date: 2025-02-21 logsource: product: windows category: process_creation detection: selection: ParentImage|endswith: \explorer.exe Image|endswith: \notepad.exe CommandLine|endswith: - password*.txt - password*.csv - password*.doc - password*.xls condition: selection falsepositives: - Legitimate use of opening files from remote hosts by administrators or users. However, storing passwords in text readable format could potentially be a violation of the organization's policy. Any match should be investigated further. level: low
Query: describe CVE-2015-6698
Matching passage: CVE-2015-6698. CWE: CWE-787. CVSS: 6.800000190734863. Heap-based buffer overflow in the AcroForm implementation in Adobe Reader and Acrobat 10.x before 10.1.16 and 11.x before 11.0.13, Acrobat and Acrobat Reader DC Classic before 2015.006.30094, and Acrobat and Acrobat Reader DC Continuous before 2015.009.20069 on Windows and OS X allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2015-6696.
Near-miss passage: CVE-2015-8841. CWE: CWE-787. CVSS: 9.800000190734863. Heap-based buffer overflow in the Archive support module in ESET NOD32 before update 11861 allows remote attackers to execute arbitrary code via a large number of languages in an EPOC installation file of type SIS_FILE_MULTILANG.
Query: exploit The chmd_init_decomp function in chmd.c in libmspack before 0.5 does not properly validate the reset interval, which allows remote attackers to cause a denial of service (divide-by
Matching passage: CVE-2015-4467. CWE: CWE-189. CVSS: 4.300000190734863. The chmd_init_decomp function in chmd.c in libmspack before 0.5 does not properly validate the reset interval, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted CHM file.
Near-miss passage: CVE-2015-7674. CWE: CWE-189. CVSS: 6.800000190734863. Integer overflow in the pixops_scale_nearest function in pixops/pixops.c in gdk-pixbuf before 2.32.1 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a crafted GIF image file, which triggers a heap-based buffer overflow.
Query: secure coding against Missing Release of Resource after Effective Lifetime
Matching passage: CWE-772 Missing Release of Resource after Effective Lifetime. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.
Near-miss passage: CWE-1037 Processor Optimization Removal or Modification of Security-critical Code. The developer builds a security-critical protection mechanism into the software, but the processor optimizes the execution of the program such that the mechanism is removed or modified.
Query: CVE similar to CVE-2015-1069
Matching passage: CVE-2015-1069. CWE: CWE-399. CVSS: 6.800000190734863. WebKit, as used in Apple Safari before 6.2.4, 7.x before 7.1.4, and 8.x before 8.0.4, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other CVEs listed in APPLE-SA-2015-03-17-1.
Near-miss passage: CVE-2015-8877. CWE: CWE-399. CVSS: 7.5. The gdImageScaleTwoPass function in gd_interpolation.c in the GD Graphics Library (aka libgd) before 2.2.0, as used in PHP before 5.6.12, uses inconsistent allocate and free approaches, which allows remote attackers to cause a denial of service (memory consumption) via a crafted call, as demonstrated by a call to the PHP imagescale function.
Query: patch priority for CVE-2015-3093
Matching passage: CVE-2015-3093. CWE: CWE-119. CVSS: 10.0. Adobe Flash Player before 13.0.0.289 and 14.x through 17.x before 17.0.0.188 on Windows and OS X and before 11.2.202.460 on Linux, Adobe AIR before 17.0.0.172, Adobe AIR SDK before 17.0.0.172, and Adobe AIR SDK & Compiler before 17.0.0.172 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2015-3078, CVE-2015-3089, and CVE-2015-3090.
Near-miss passage: CVE-2015-6284. CWE: CWE-119. CVSS: 7.800000190734863. Buffer overflow in the Conference Control Protocol API implementation in Cisco TelePresence Server software before 4.1(2.33) on 7010, MSE 8710, Multiparty Media 310 and 320, and Virtual Machine devices allows remote attackers to cause a denial of service (device crash) via a crafted URL, aka Bug ID CSCuu28277.
Query: Sigma rule for Detects execution of "rundll32" with potential obfuscated ordinal calls
Matching passage: Sigma rule: Detects execution of "rundll32" with potential obfuscated ordinal calls. Logsource: windows / process_creation. Rule: title: Potential Obfuscated Ordinal Call Via Rundll32 id: 43fa5350-db63-4b8f-9a01-789a427074e1 status: test description: Detects execution of "rundll32" with potential obfuscated ordinal calls references: - Internal Research - https://www.youtube.com/watch?v=52tAmVLg1KM&t=2070s author: Nasreddine Bencherchali (Nextron Systems), Swachchhanda Shrawan Poudel (Nextron Systems) date: 2023-05-17 modified: 2025-02-23 tags: - attack.stealth - attack.t1027.010 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \rundll32.exe - OriginalFileName: RUNDLL32.EXE - CommandLine|contains: rundll32 selection_cli: CommandLine|contains: - '#+' - '#-' - '#0' - '#655' - '#656' condition: all of selection_* falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects the use of Inveigh a cross-platform .NET IPv4/IPv6 machine-in-the-middle tool. Logsource: windows / process_creation. Rule: title: HackTool - Inveigh Execution id: b99a1518-1ad5-4f65-bc95-1ffff97a8fd0 status: test description: Detects the use of Inveigh a cross-platform .NET IPv4/IPv6 machine-in-the-middle tool references: - https://github.com/Kevin-Robertson/Inveigh - https://thedfirreport.com/2020/11/23/pysa-mespinoza-ransomware/ author: Nasreddine Bencherchali (Nextron Systems) date: 2022-10-24 modified: 2023-02-04 tags: - attack.credential-access - attack.t1003.001 logsource: category: process_creation product: windows detection: selection: - Image|endswith: \Inveigh.exe - OriginalFileName: - \Inveigh.exe - \Inveigh.dll - Description: Inveigh - CommandLine|contains: - ' -SpooferIP' - ' -ReplyToIPs ' - ' -ReplyToDomains ' - ' -ReplyToMACs ' - ' -SnifferIP' condition: selection falsepositives: - Very unlikely level: critical
Query: detect Detects enumeration of local system groups. Adversaries may attempt to find local system groups and permission settings in logs
Matching passage: Sigma rule: Detects enumeration of local system groups. Adversaries may attempt to find local system groups and permission settings. Logsource: linux / process_creation. Rule: title: Local Groups Discovery - Linux id: 676381a6-15ca-4d73-a9c8-6a22e970b90d status: test description: Detects enumeration of local system groups. Adversaries may attempt to find local system groups and permission settings references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md author: Ömer Günal, Alejandro Ortuno, oscd.community date: 2020-10-11 modified: 2025-06-04 tags: - attack.discovery - attack.t1069.001 logsource: category: process_creation product: linux detection: selection_1: Image|endswith: /groups selection_2: Image|endswith: - /cat - /ed - /head - /less - /more - /nano - /tail - /vi - /vim CommandLine|contains: /etc/group condition: 1 of selection_* falsepositives: - Legitimate administration activities level: low
Near-miss passage: Sigma rule: Detects the creation of a macro file for Outlook.. Logsource: windows / file_event. Rule: title: New Outlook Macro Created id: 8c31f563-f9a7-450c-bfa8-35f8f32f1f61 related: - id: 117d3d3a-755c-4a61-b23e-9171146d094c type: derived status: test description: Detects the creation of a macro file for Outlook. references: - https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/ author: '@ScoubiMtl' date: 2021-04-05 modified: 2023-02-08 tags: - attack.privilege-escalation - attack.persistence - attack.command-and-control - attack.t1137 - attack.t1008 - attack.t1546 logsource: category: file_event product: windows detection: selection: Image|endswith: \outlook.exe TargetFilename|endswith: \Microsoft\Outlook\VbaProject.OTM condition: selection falsepositives: - User genuinely creates a VB Macro for their email level: medium
Query: patch priority for CVE-2015-1484
Matching passage: CVE-2015-1484. CWE: UNKNOWN. CVSS: 6.900000095367432. Unquoted Windows search path vulnerability in the agent in Symantec Workspace Streaming (SWS) 6.1 before SP8 MP2 HF7 and 7.5 before SP1 HF4, when AppMgrService.exe is configured as a service, allows local users to gain privileges via a Trojan horse executable file in the %SYSTEMDRIVE% directory, as demonstrated by program.exe.
Near-miss passage: CVE-2015-4798. CWE: UNKNOWN. CVSS: 10.0. Unspecified vulnerability in the Oracle Applications Technology Stack component in Oracle E-Business Suite 11.5.10.2 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to DB Listener, a different vulnerability than CVE-2015-4839.
Query: vulnerability: Heap-based buffer overflow in SceneKit in Apple OS X before 10.10.5 allows remote attackers to execute arbitrary code via a crafted Collada file.
Matching passage: CVE-2015-5772. CWE: CWE-119. CVSS: 6.800000190734863. Heap-based buffer overflow in SceneKit in Apple OS X before 10.10.5 allows remote attackers to execute arbitrary code via a crafted Collada file.
Near-miss passage: CVE-2015-0795. CWE: CWE-119. CVSS: 6.800000190734863. Multiple stack-based buffer overflows in the SafeShellExecute method in the NetIQExecObject.NetIQExec.1 ActiveX control in NetIQExec.dll in NetIQ Security Solutions for iSeries 8.1 allow remote attackers to execute arbitrary code via long arguments, aka ZDI-CAN-2699.
Query: describe CVE-2015-2340
Matching passage: CVE-2015-2340. CWE: CWE-399. CVSS: 6.099999904632568. TPInt.dll in VMware Workstation 10.x before 10.0.6 and 11.x before 11.1.1, VMware Player 6.x before 6.0.6 and 7.x before 7.1.1, and VMware Horizon Client 3.2.x before 3.2.1, 3.3.x, and 5.x local-mode before 5.4.2 on Windows does not properly allocate memory, which allows guest OS users to cause a host OS denial of service via unspecified vectors.
Near-miss passage: CVE-2015-1754. CWE: CWE-399. CVSS: 9.300000190734863. Microsoft Internet Explorer 8 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability."
Query: risk of Cross-site scripting (XSS) vulnerability in BlackCat CMS 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the name in a new group to backend/groups/index.ph
Matching passage: CVE-2015-5521. CWE: CWE-79. CVSS: 4.800000190734863. Cross-site scripting (XSS) vulnerability in BlackCat CMS 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the name in a new group to backend/groups/index.php.
Near-miss passage: CVE-2015-1435. CWE: CWE-79. CVSS: 4.300000190734863. Cross-site scripting (XSS) vulnerability in my little forum before 2.3.4 allows remote attackers to inject arbitrary web script or HTML via the back parameter to index.php.
Query: exploit IBM MQ Light before 1.0.0.2 allows remote attackers to cause a denial of service (disk consumption) via a crafted byte sequence in authentication data, a different vulnerability th
Matching passage: CVE-2015-1987. CWE: CWE-399. CVSS: 7.800000190734863. IBM MQ Light before 1.0.0.2 allows remote attackers to cause a denial of service (disk consumption) via a crafted byte sequence in authentication data, a different vulnerability than CVE-2015-1956 and CVE-2015-1958.
Near-miss passage: CVE-2015-6292. CWE: CWE-399. CVSS: 7.800000190734863. The proxy-cache implementation in Cisco AsyncOS 8.0.x before 8.0.7-151, 8.1.x and 8.5.x before 8.5.2-004, 8.6.x and 8.7.x before 8.7.0-171-LD, and 8.8.x before 8.8.0-085 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption) via multiple proxy connections, aka Bug ID CSCus10922.
Query: patch priority for CVE-2015-9307
Matching passage: CVE-2015-9307. CWE: CWE-352. CVSS: 8.800000190734863. The wp-google-map-plugin plugin before 2.3.10 for WordPress has CSRF in the add/edit location feature.
Near-miss passage: CVE-2015-3350. CWE: CWE-352. CVSS: 6.800000190734863. Cross-site request forgery (CSRF) vulnerability in the Todo Filter module before 6.x-1.1 and 7.x-1.x before 7.x-1.1 for Drupal allows remote attackers to hijack the authentication of arbitrary users for requests that toggle a task via unspecified vectors.
Query: EDR alert: possible Python Startup Hooks (T1546.018)
Matching passage: T1546.018 Python Startup Hooks. Tactics: persistence, privilege escalation. Description: Adversaries may achieve persistence by leveraging Python’s startup mechanisms, including path configuration (`.pth`) files and the `sitecustomize.py` or `usercustomize.py` modules. These files are automatically processed during the initialization of the Python interpreter, allowing for the execution of arbitrary code whenever Python is invoked.(Citation: Volexity GlobalProtect CVE 2024) Path configuration files are designed to extend Python’s module search paths through the use of import statements. If a `.pth` file is placed in Python's `site-packages` or `dist-packages` directories, any lines beginning with `import` will be executed automatically on Python invocation.(Citation: DFIR Python Persistence 2025) Similarly, if `sitecustomize.py` or `usercustomize.py` is present in the Python path, these files will be imported during interpreter startup, and any code they contain will be executed.(Citation: Python Site Configuration Hook) Adversaries may abuse these mechanisms to establish persistence on systems where Python is widely used (e.g., for automation or scripting in production environments).
Near-miss passage: T1546.007 Netsh Helper DLL. Tactics: privilege escalation, persistence. Description: Adversaries may establish persistence by executing malicious content triggered by Netsh Helper DLLs. Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system. It contains functionality to add helper DLLs for extending functionality of the utility.(Citation: TechNet Netsh) The paths to registered netsh.exe helper DLLs are entered into the Windows Registry at <code>HKLM\SOFTWARE\Microsoft\Netsh</code>. Adversaries can use netsh.exe helper DLLs to trigger execution of arbitrary code in a persistent manner. This execution would take place anytime netsh.exe is executed, which could happen automatically, with another persistence technique, or if other software (ex: VPN) is present on the system that executes netsh.exe as part of its normal functionality.(Citation: Github Netsh Helper CS Beacon)(Citation: Demaske Netsh Persistence)
Query: CVE similar to CVE-2015-3350
Matching passage: CVE-2015-3350. CWE: CWE-352. CVSS: 6.800000190734863. Cross-site request forgery (CSRF) vulnerability in the Todo Filter module before 6.x-1.1 and 7.x-1.x before 7.x-1.1 for Drupal allows remote attackers to hijack the authentication of arbitrary users for requests that toggle a task via unspecified vectors.
Near-miss passage: CVE-2015-0588. CWE: CWE-352. CVSS: 6.800000190734863. Cross-site request forgery (CSRF) vulnerability in Cisco Unified Communications Domain Manager (UCDM) 10 allows remote attackers to hijack the authentication of arbitrary users, aka Bug ID CSCuo77055.
Query: write Sigma for Detects suspicious activity in which the MSExchangeMailboxReplication process writes .asp and .apsx files to disk, which
Matching passage: Sigma rule: Detects suspicious activity in which the MSExchangeMailboxReplication process writes .asp and .apsx files to disk, which. Logsource: windows / file_event. Rule: title: Suspicious MSExchangeMailboxReplication ASPX Write id: 7280c9f3-a5af-45d0-916a-bc01cb4151c9 status: test description: Detects suspicious activity in which the MSExchangeMailboxReplication process writes .asp and .apsx files to disk, which could be a sign of ProxyShell exploitation references: - https://redcanary.com/blog/blackbyte-ransomware/ author: Florian Roth (Nextron Systems) date: 2022-02-25 tags: - attack.initial-access - attack.t1190 - attack.persistence - attack.t1505.003 logsource: product: windows category: file_event detection: selection: Image|endswith: \MSExchangeMailboxReplication.exe TargetFilename|endswith: - .aspx - .asp condition: selection falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Adversaries may communicate using application layer protocols associated with web traffic to avoid detection/network fil. Logsource: windows / ps_script. Rule: title: Change User Agents with WebRequest id: d4488827-73af-4f8d-9244-7b7662ef046e status: test description: 'Adversaries may communicate using application layer protocols associated with web traffic to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1071.001/T1071.001.md#t1071001---web-protocols author: frack113 date: 2022-01-23 modified: 2025-07-18 tags: - attack.command-and-control - attack.t1071.001 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection_webrequest: ScriptBlockText|contains: - Invoke-WebRequest - Invoke-RestMethod - ' irm ' - 'iwr ' selection_useragent: ScriptBlockText|contains: '-UserAgent ' condition: all of selection_* falsepositives: - Unknown level: medium
Query: CVE similar to CVE-2015-8823
Matching passage: CVE-2015-8823. CWE: CWE-416. CVSS: 8.800000190734863. Use-after-free vulnerability in the TextField object implementation in Adobe Flash Player before 18.0.0.268 and 19.x and 20.x before 20.0.0.228 on Windows and OS X and before 11.2.202.554 on Linux, Adobe AIR before 20.0.0.204, Adobe AIR SDK before 20.0.0.204, and Adobe AIR SDK & Compiler before 20.0.0.204 allows attackers to execute arbitrary code via crafted text property, a different vulnerability than CVE-2015-8048, CVE-2015-8049, CVE-2015-8050, CVE-2015-8055, CVE-2015-8056, CVE-2015-8057, CVE-2015-8058, CVE-2015-8059, CVE-2015-8061, CVE-2015-8062, CVE-2015-8063, CVE-2015-8064, CVE-2015-8065, CVE-2015-8066, CVE-2015-8067, CVE-2015-8068, CVE-2015-8069, CVE-2015-8070, CVE-2015-8071, CVE-2015-8401, CVE-2015-8402, CVE-2015-8403, CVE-2015-8404, CVE-2015-8405, CVE-2015-8406, CVE-2015-8410, CVE-2015-8411, CVE-2015-8412, CVE-2015-8413, CVE-2015-8414, CVE-2015-8420, CVE-2015-8421, CVE-2015-8422, CVE-2015-8423, CVE-2015-8424, CVE-2015-8425, CVE-2015-8426, CVE-2015-8427, CVE-2015-8428, CVE-2015-8429, CVE-2015-8430, CVE-2015-8431, CVE-2015-8432, CVE-2015-8433, CVE-2015-8434, CVE-2015-8435, CVE-2015-8436, CVE-2015-8437, CVE-2015-8441, CVE-2015-8442, CVE-2015-8447, CVE-2015-8448, CVE-2015-8449, CVE-2015-8450, CVE-2015-8452, CVE-2015-8454, CVE-2015-8653, CVE-2015-8655, CVE-2015-8821, and CVE-2015-8822.
Near-miss passage: CVE-2015-3055. CWE: CWE-416. CVSS: 7.5. Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.14 and 11.x before 11.0.11 on Windows and OS X allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2015-3053, CVE-2015-3054, CVE-2015-3059, and CVE-2015-3075.
Query: CVE similar to CVE-2015-0884
Matching passage: CVE-2015-0884. CWE: UNKNOWN. CVSS: 6.900000095367432. Unquoted Windows search path vulnerability in Toshiba Bluetooth Stack for Windows before 9.10.32(T) and Service Station before 2.2.14 allows local users to gain privileges via a Trojan horse application with a name composed of an initial substring of a path that contains a space character.
Near-miss passage: CVE-2015-2096. CWE: UNKNOWN. CVSS: 6.800000190734863. Use-after-free vulnerability in the Connect function in the WESPMonitor.WESPMonitorCtrl.1 ActiveX control in WebGate eDVR Manager allows remote attackers to execute arbitrary code via an invalid IP address and a page reload.
Query: describe CVE-2015-10011
Matching passage: CVE-2015-10011. CWE: CWE-117. CVSS: 9.800000190734863. A vulnerability classified as problematic has been found in OpenDNS OpenResolve. This affects an unknown part of the file resolverapi/endpoints.py. The manipulation leads to improper output neutralization for logs. The identifier of the patch is 9eba6ba5abd89d0e36a008921eb307fcef8c5311. It is recommended to apply a patch to fix this issue. The identifier VDB-217197 was assigned to this vulnerability.
Near-miss passage: CVE-2015-8455. CWE: CWE-119. CVSS: 10.0. Adobe Flash Player before 18.0.0.268 and 19.x and 20.x before 20.0.0.228 on Windows and OS X and before 11.2.202.554 on Linux, Adobe AIR before 20.0.0.204, Adobe AIR SDK before 20.0.0.204, and Adobe AIR SDK & Compiler before 20.0.0.204 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2015-8045, CVE-2015-8047, CVE-2015-8060, CVE-2015-8408, CVE-2015-8416, CVE-2015-8417, CVE-2015-8418, CVE-2015-8419, CVE-2015-8443, CVE-2015-8444, and CVE-2015-8451.
Query: CVE similar to CVE-2015-7603
Matching passage: CVE-2015-7603. CWE: CWE-22. CVSS: 7.800000190734863. Directory traversal vulnerability in Konica Minolta FTP Utility 1.0 allows remote attackers to read arbitrary files via a ..\ (dot dot backslash) in a RETR command.
Near-miss passage: CVE-2015-1490. CWE: CWE-22. CVSS: 5.5. Directory traversal vulnerability in the management console in Symantec Endpoint Protection Manager (SEPM) 12.1 before 12.1-RU6-MP1 allows remote authenticated users to read arbitrary files via a relative pathname in a client installation package.