CVE-2026-0892

CVE-2026-0892 concerns memory safety bugs in Mozilla Firefox and Thunderbird prior to version 147. The CVE description notes memory corruption with potential for arbitrary code execution, affecting Firefox < 147 and Thunderbird

CVE-2026-0887

Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0883

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7...

CVE-2026-0881 Sandbox escape in the Messaging System component

Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147...

Security Vulnerabilities fixed in Firefox 147 — Mozilla

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. 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. Memory safety bugs present in...

PT-2026-2641

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 147 Firefox ESR versions prior to 115.32 Firefox ESR versions prior to 140.7 Description A security issue exists in the Graphics component due to incorrect boundary conditions, which can lead to a sandbox escape...

PT-2026-2642

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 147 Firefox ESR versions prior to 115.32 Firefox ESR versions prior to 140.7 Description A flaw exists due to an integer overflow within the Graphics component, potentially allowing for a sandbox escape. Recommendatio...

PT-2026-21726

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 148 Firefox ESR versions 115.32 through 115.32 Firefox ESR versions 140.7 through 140.7 Thunderbird versions prior to 148 Thunderbird ESR versions 140.7 through 140.7 Description The software contains memory safety...