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firefox

Vendor: Mozilla • 3,473 CVEs

CVEs (3,473)

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1Mozilla
2Firefox
Thunderbird
Oct 5, 2026
Sep 15, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Incorrect boundary conditions in the Networking: HTTP component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
1Mozilla
2Firefox
Thunderbird
Oct 5, 2026
Sep 15, 2026
N/A· v4
9.6 CRITICAL· v3
N/A· v2
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Thunderbird 140.17, Firefox 156, Firefox ESR 153.3, Thunderbird 156, Thunderbird 153.3, Firefox ESR 115.42, a...Show more
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Thunderbird 140.17, Firefox 156, Firefox ESR 153.3, Thunderbird 156, Thunderbird 153.3, Firefox ESR 115.42, and Firefox ESR 140.17.Show less
1Mozilla
2Firefox
Thunderbird
Oct 5, 2026
Sep 15, 2026
N/A· v4
9.1 CRITICAL· v3
N/A· v2
Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
1Mozilla
2Firefox
Thunderbird
Oct 5, 2026
Sep 15, 2026
N/A· v4
9.6 CRITICAL· v3
N/A· v2
Sandbox escape due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
6.5 MEDIUM· v3
N/A· v2
Information disclosure in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
5.4 MEDIUM· v3
N/A· v2
Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the DOM: Streams component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the XML component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thu...Show more
Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.Show less
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.1 HIGH· v3
N/A· v2
Mitigation bypass in the Remote Settings Client component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153....Show more
Mitigation bypass in the Remote Settings Client component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.Show less
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
9.6 CRITICAL· v3
N/A· v2
Sandbox escape in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153...Show more
Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.Show less
1Mozilla
2Firefox
Thunderbird
Oct 6, 2026
Sep 15, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.