# MA-863.092022: MyCERT Advisory - Mozilla Releases Security Updates for Firefox, Firefox ESR, and Thunderbird

**Date:** 23 Sep 2022  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-863.092022  
**Advisory ID:** MA-863.092022

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**1.0 Introduction**
Recently, Mozilla has released security updates to address vulnerabilities in Firefox, Firefox ESR, and Thunderbird.
**2.0 Impact**
An attacker could exploit some of these vulnerabilities to take control of an affected system.
**3.0 Affected Products**
The affected Microsoft products are:
• Mozilla Firefox
• Mozilla Firefox ESR
• Mozilla Thunderbird
**4.0 Recommendations**
Users and administrators to review the Mozilla security advisories for Firefox 105, Firefox ESR 102.3, and ThunderBird 91.13.1 and apply the necessary updates. Kindly refer to the following URLs:
• <https://www.mozilla.org/en-US/security/advisories/mfsa2022-40/>
• <https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/>
• <https://www.mozilla.org/en-US/security/advisories/mfsa2022-39/>
Generally, MyCERT advises the users of this 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 MyCERT 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 09:00 -18:00 MYT 
Web: <https://www.mycert.org.my> 
Twitter: <https://twitter.com/mycert> 
Facebook: <https://www.facebook.com/mycert.org.my>
**5.0    References**
• <https://www.cisa.gov/uscert/ncas/current-activity/2022/09/21/mozilla-releases-security-updates-firefox-esr-thunderbird>
• <https://www.mozilla.org/en-US/security/advisories/mfsa2022-40/>
• <https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/>
• <https://www.mozilla.org/en-US/security/advisories/mfsa2022-39/>