# MA-1310.042025: MyCERT Advisory - Fortinet Releases Advisory on New Post-Exploitation Technique for Known Vulnerabilities

**Date:** 13 Apr 2025  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-1310.042025  
**Advisory ID:** MA-1310.042025

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**1.0 Introduction**
Recently, Fortinet has released security updates to address a malicious file from previously exploited Fortinet vulnerabilities (**CVE-2024-21762, CVE-2023-27997,** and **CVE-2022-42475)**within FortiGate products.
**2.0 Impact**
This malicious file could enable read-only access to files on the device’s file system, which may include configurations. 
**3.0 Affected Products**
- FG-IR-22-398: Heap-based buffer overflow in sslvpnd
- FG-IR-23-097: Heap buffer overflow in sslvpn pre-authentication
- FG-IR-24-015: Out-of-outbound Write in sslvpnd
**4.0 Recommendations**
CyberSecurity Malaysia encourages users and administrators to review the [Fortinet Security Updates for Multiple Products](https://www.fortiguard.com/psirt) and apply necessary updates. 
- Upgrade to FortiOS versions 7.6.2, 7.4.7, 7.2.11, 7.0.17, 6.4.16 to remove the malicious file and prevent re-compromise.
Kindly refer to the following URL: 
- <https://community.fortinet.com/t5/FortiGate/Technical-Tip-Recommended-steps-to-execute-in-case-of-a/ta-p/230694>
- <https://www.fortinet.com/blog/psirt-blogs/analysis-of-threat-actor-activity>
Generally, we advise the users of the devices to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact us through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 08:30 -17:30 MYT 
Web: [https://www.mycert.org.my](https://www.mycert.org.my/) 
**5.0    References**
- <https://www.fortiguard.com/psirt/FG-IR-23-097>
- <https://www.fortiguard.com/psirt/FG-IR-22-398>
- <https://fortiguard.fortinet.com/psirt/FG-IR-24-015>
- <https://community.fortinet.com/t5/FortiGate/Technical-Tip-Standard-procedure-to-format-a-FortiGate-Log-Disk/ta-p/190473>
- <https://www.fortinet.com/blog/psirt-blogs/analysis-of-threat-actor-activity>
- <https://www.fortiguard.com/psirt>
- <https://www.cisa.gov/news-events/alerts/2025/04/11/fortinet-releases-advisory-new-post-exploitation-technique-known-vulnerabilities>