Vulnerabilities
Vulnerable Software
Mozilla:  >> Thunderbird  >> 135.0  Security Vulnerabilities
Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
CVSS Score
10.0
EPSS Score
0.0
Published
2026-01-13
Use-after-free in the IPC component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS Score
8.8
EPSS Score
0.0
Published
2026-01-13
Information disclosure in the Networking component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-01-13
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-01-13
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
CVSS Score
7.3
EPSS Score
0.001
Published
2025-12-09
Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-12-09
Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-12-09
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
CVSS Score
8.8
EPSS Score
0.001
Published
2025-12-09
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
CVSS Score
8.8
EPSS Score
0.001
Published
2025-12-09
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-12-09


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