Vulnerability index

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Firefox CRITICAL 10.0
CVE-2026-75874

Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154 and Thunderbird 154.

Fix: 154.0 / 154.0.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74990

Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corr…

Fix: 115.39.0 / 140.14.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74987

Internally found bugs present in Thunderbird ESR 140.13, Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corr…

Fix: 140.14.0 / 153.1.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74988

Internally found bugs present in Thunderbird ESR 153.0 and Thunderbird 153. Some of these bugs showed evidence of memory corruption or another securi…

Fix: 153.1.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74989

Internally found bugs present in Thunderbird 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we …

Fix: 154.0 / 154.0.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74979

Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird …

Fix: 153.1.0 / 154.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74964

Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thun…

Fix: 140.14.0 / 153.1.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.1
CVE-2026-74961

Side-channel in the Web Audio component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Fix: 153.1.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.1
CVE-2026-74956

Same-origin policy bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and…

Fix: 153.1.0 / 154.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74940

Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.…

Fix: 115.39.0 / 140.14.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74943

Use-after-free in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR …

Fix: 115.39.0 / 140.14.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74944

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154…

Fix: 140.14.0 / 153.1.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.1
CVE-2026-74938

Mitigation bypass in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 1…

Fix: 153.1.0 / 154.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-74936

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderb…

Fix: 140.14.0 / 153.1.0+
Fix from $5,750 2026-08-18
Firefox CRITICAL 9.8
CVE-2026-16408

Integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16411

Memory safety bugs present in Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of the…

Fix: 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16412

Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with en…

Fix: 140.13.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16407

Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16410

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.1
CVE-2026-16406

Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16402

Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16395

Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16389

Incorrect boundary conditions, integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.1
CVE-2026-16394

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.1
CVE-2026-16390

Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunder…

Fix: 140.13.0 / 153.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.1
CVE-2026-16393

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.1
CVE-2026-16392

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16382

Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Fix: 153.0 / 153.0.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16383

Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird…

Fix: 140.13.0 / 153.0+
Fix from $2,300 2026-07-21
Firefox CRITICAL 9.8
CVE-2026-16387

Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 1…

Fix: 140.13.0 / 153.0+
Fix from $2,300 2026-07-21