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Vendor: Mozilla • 3,181 CVEs

CVEs (3,181)

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1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Jan 13, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Sandbox escape due to integer overflow in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Jan 13, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Jan 13, 2026
N/A· v4
8.0 HIGH· v3
N/A· v2
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Jan 13, 2026
N/A· v4
8.1 HIGH· v3
N/A· v2
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
1Mozilla
1Firefox
Jun 17, 2026
Dec 18, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
Memory safety bugs present in Firefox 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. This vulnerability...Show more
Memory safety bugs present in Firefox 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. This vulnerability was fixed in Firefox 146.0.1.Show less
1Mozilla
1Firefox
Jun 17, 2026
Dec 18, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 146.0.1.
1Mozilla
1Firefox
Jun 17, 2026
Dec 18, 2025
N/A· v4
6.5 MEDIUM· v3
N/A· v2
Unicode RTLO characters could allow malicious websites to spoof filenames in the downloads UI for Firefox for iOS, potentially tricking users into saving files of an unexpected file type. This vulnerability was fixed in...Show more
Unicode RTLO characters could allow malicious websites to spoof filenames in the downloads UI for Firefox for iOS, potentially tricking users into saving files of an unexpected file type. This vulnerability was fixed in Firefox for iOS 144.0.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
8.1 HIGH· v3
N/A· v2
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...Show more
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 was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
7.3 HIGH· v3
N/A· v2
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....Show more
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 was fixed in Firefox 146 and Thunderbird 146.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
6.5 MEDIUM· v3
N/A· v2
Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
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.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Use-after-free in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 146 and Thunderbird 146.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
7.3 HIGH· v3
N/A· v2
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.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the DOM: Notifications component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
8.0 HIGH· v3
N/A· v2
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Dec 9, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Use-after-free in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.