Security Vulnerabilities fixed in Firefox ESR 115.41 — Mozilla

Note : We have changed how we publish advisories. We no longer roll all internally identified memory safety vulnerabilities into a single CVE and are now issuing an advisory for every individual bug. CVE-2026-92006: Privilege escalation due to incorrect boundary conditions in the Graphics:...

Security Vulnerabilities fixed in Firefox ESR 115.40 — Mozilla

Internally found bugs present in Firefox 154, Firefox ESR 153.1, Firefox ESR 140.14 and Firefox ESR 115.39. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited...

CVE-2026-74990

Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was...

CVE-2026-74942

Privilege escalation in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

Security Vulnerabilities fixed in Firefox ESR 140.14 — Mozilla

Internally found bugs present in Firefox ESR 140.13, Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. Internally found bugs present in...

CVE-2026-16361

Memory safety bugs present in Thunderbird ESR 140.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 115.38, Firefox ESR 140.13, and Thunderbi...

firefox -- Memory safety bugs present in Firefox ESR 115

https://www.mozilla.org/en-US/security/advisories/mfsa2026-40/ reports: Memory safety bugs. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code...

KLA91015 Multiple vulnerabilities in Mozilla Thunderbird

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to obtain sensitive information, execute arbitrary code, cause denial of service. Below is a complete list of vulnerabilities: 1. Information disclosure vulnerability in the Audio/Video...

OESA-2026-1451 libvpx security update

libvpx provides the VP8/VP9 SDK, which allows you to integrate your applications with the VP8 and VP9 video codecs, high quality, royalty free, open source codecs deployed on millions of computers and devices worldwide. Security Fixes: Heap buffer overflow vulnerability exists in libvpx component...