Mozilla: >> Thunderbird >> 140.16.0 Security Vulnerabilities
Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVSS Score
10.0
EPSS Score
0.004
Published
2026-07-21
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVSS Score
9.1
EPSS Score
0.004
Published
2026-07-21
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
CVSS Score
8.1
EPSS Score
0.003
Published
2026-05-19
Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
CVSS Score
6.5
EPSS Score
0.002
Published
2026-05-19
Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
CVSS Score
8.8
EPSS Score
0.003
Published
2026-05-19
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
CVSS Score
9.6
EPSS Score
0.004
Published
2026-05-19
Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
CVSS Score
7.5
EPSS Score
0.004
Published
2026-05-19
Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
CVSS Score
9.1
EPSS Score
0.004
Published
2026-05-19
Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
CVSS Score
7.5
EPSS Score
0.006
Published
2026-05-19
Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
CVSS Score
8.8
EPSS Score
0.004
Published
2026-05-19