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Vendor: Mozilla • 3,473 CVEs

CVEs (3,473)

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1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
6.1 MEDIUM· v3
N/A· v2
Other issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Other issue in the Profile Backup component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Site isolation issue in the DOM: Push Subscriptions component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Information disclosure in the Networking: HTTP component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thun...Show more
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.Show less
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the WebDriver BiDi component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
1Mozilla
2Firefox
Thunderbird
Sep 3, 2026
Sep 1, 2026
N/A· v4
4.3 MEDIUM· v3
N/A· v2
Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
5.4 MEDIUM· v3
N/A· v2
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
5.4 MEDIUM· v3
N/A· v2
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
5.4 MEDIUM· v3
N/A· v2
Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
9.6 CRITICAL· v3
N/A· v2
Sandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunde...Show more
Sandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.Show less
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
5.4 MEDIUM· v3
N/A· v2
Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
9.6 CRITICAL· v3
N/A· v2
Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thun...Show more
Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.Show less
1Mozilla
2Firefox
Thunderbird
Sep 2, 2026
Sep 1, 2026
N/A· v4
5.4 MEDIUM· v3
N/A· v2
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 1, 2026
Aug 18, 2026
N/A· v4
10.0 CRITICAL· v3
N/A· v2
Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and Thunderbird 153.2.
1Mozilla
2Firefox
Thunderbird
Sep 1, 2026
Aug 18, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with eno...Show more
Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.Show less
1Mozilla
2Firefox
Thunderbird
Sep 1, 2026
Aug 18, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Internally found bugs present in Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited...Show more
Internally found bugs present in Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Thunderbird 154.Show less