Mozilla: >> Thunderbird >> 140.17.0 Security Vulnerabilities
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
CVSS Score
8.8
EPSS Score
0.002
Published
2026-09-29
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
CVSS Score
9.1
EPSS Score
0.004
Published
2026-09-29
Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
CVSS Score
8.8
EPSS Score
0.002
Published
2026-09-29
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
CVSS Score
8.8
EPSS Score
0.003
Published
2026-09-29
Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVSS Score
9.1
EPSS Score
0.003
Published
2026-09-15
Incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVSS Score
8.8
EPSS Score
0.001
Published
2026-09-15
Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVSS Score
6.5
EPSS Score
0.003
Published
2026-09-15
Denial-of-service in the Security component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVSS Score
6.5
EPSS Score
0.002
Published
2026-09-15
Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVSS Score
9.1
EPSS Score
0.003
Published
2026-09-15
Incorrect boundary conditions in the Safe Browsing component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
CVSS Score
8.0
EPSS Score
0.002
Published
2026-09-15