← Back

Firefox

firefox

Vendor: Mozilla • 3,269 CVEs

CVEs (3,269)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 21, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 21, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Use-after-free in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 21, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 7, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. 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 arbitra...Show more
Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. 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 149.0.2 and Thunderbird 149.0.2.Show less
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 7, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of...Show more
Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. 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 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.Show less
1Mozilla
1Firefox
Jul 15, 2026
Apr 7, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2.
1Mozilla
1Firefox
Jul 15, 2026
Apr 7, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Apr 7, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with...Show more
Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. 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 149.0.2, Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.Show less
1Mozilla
2Firefox
Thunderbird
Jul 15, 2026
Mar 24, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Memory safety bugs present in Firefox 148 and Thunderbird 148. 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 148 and Thunderbird 148. 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 149 and Thunderbird 149.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Mar 24, 2026
N/A· v4
6.5 MEDIUM· v3
N/A· v2
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Mar 24, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Denial-of-service in the Libraries component in NSS. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Mar 24, 2026
N/A· v4
7.5 HIGH· v3
N/A· v2
Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
1Mozilla
1Firefox
Jun 17, 2026
Mar 24, 2026
N/A· v4
10.0 CRITICAL· v3
N/A· v2
Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Mar 24, 2026
N/A· v4
9.1 CRITICAL· v3
N/A· v2
Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
1Mozilla
1Firefox
Jun 17, 2026
Mar 24, 2026
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
1Mozilla
1Firefox
Jun 17, 2026
Mar 24, 2026
N/A· v4
8.8 HIGH· v3
N/A· v2
Privilege escalation in the IPC component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.