CVE-2026-4718

CVE-2026-4718 is an undefined behavior vulnerability in the WebRTC: Signaling component that affects Firefox and Thunderbird products. Public advisories indicate fixes in Firefox 149 and Firefox ESR 140.9, and Thunderbird 149 and Thunderbird 140.9. The connected sources also enumerate broader Moz...

CVE-2026-4718 Undefined behavior in the WebRTC: Signaling component

Undefined behavior in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4728

Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149...

CVE-2026-4727 Denial-of-service in the Libraries component in NSS

Denial-of-service in the Libraries component in NSS. This vulnerability was fixed in Firefox 149 and Thunderbird 149...

CVE-2026-4717

CVE-2026-4717: Privilege escalation in the Netmonitor component. According to the provided advisories, Firefox and Firefox ESR are affected and the issue is fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. The vulnerability originated in the Netmonitor component an...

CVE-2026-4717

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4726

Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149...

CVE-2026-4716

Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4714

Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4714 Incorrect boundary conditions in the Audio/Video component

Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4712

The CVE covers an information-disclosure vulnerability in the Widget: Cocoa component affecting Firefox before 149 and Firefox ESR before 140.9. Affected product/component: Firefox/Firefox ESR on Cocoa widgets; vulnerability details (root cause, exploitability) are not provided in the supplied do...

CVE-2026-4711

Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4710

Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4709 Incorrect boundary conditions in the Audio/Video: GMP component

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4709

CVE-2026-4709 involves Firefox and Thunderbird components, specifically an incorrect boundary condition in the Audio/Video: GMP path. The vulnerability affects Firefox and Thunderbird releases prior to the fixes, with patches noted in Firefox 149, Firefox ESR 115.34 and 140.9, Thunderbird 149 and...

CVE-2026-4709

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4708

Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4706

CVE-2026-4706: In Graphics: Canvas2D, a boundary-condition issue could affect Firefox/Thunderbird before certain releases. Public advisories indicate fixes in Firefox 149, ESR 115.34 and ESR 140.9, and Thunderbird 149 and 140.9. Upgrading to these versions (or later) is the advised remediation pe...

CVE-2026-4706 Incorrect boundary conditions in the Graphics: Canvas2D component

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...

CVE-2026-4707

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...