Security Vulnerabilities
Use-after-free in the Audio/Video: GMP component. This vulnerability affects Firefox < 146 and Thunderbird < 146.
CVSS Score
9.8
EPSS Score
0.0
Published
2025-12-09
Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146 and Thunderbird < 146.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-12-09
Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
CVSS Score
8.8
EPSS Score
0.0
Published
2025-12-09
Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
CVSS Score
8.8
EPSS Score
0.0
Published
2025-12-09
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
CVSS Score
9.8
EPSS Score
0.0
Published
2025-12-09
Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-12-09
Memory safety bugs present in Firefox 145 and Thunderbird 145. 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 affects Firefox < 146 and Thunderbird < 146.
CVSS Score
7.3
EPSS Score
0.0
Published
2025-12-09
Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. 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 affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
CVSS Score
8.1
EPSS Score
0.0
Published
2025-12-09
Use-after-free in the WebRTC: Signaling component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
CVSS Score
9.8
EPSS Score
0.0
Published
2025-12-09
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
CVSS Score
8.0
EPSS Score
0.0
Published
2025-12-09