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Mozilla

7,140 known vulnerabilities

444
CRITICAL
788
HIGH
788
MEDIUM
19
LOW

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firefox 1837 thunderbird 1183 firefox esr 435 firefox mobile 60 firefox focus 20 focus 16 network security services 16 thunderbird esr 14 bleach 5 vpn 4
2,039 CVEs · Page 7/41
7.5
CVE-2026-4707

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox

7.5
CVE-2026-4706

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox

9.8
CVE-2026-4705

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

7.5
CVE-2026-4704

Denial-of-service in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Th

9.8
CVE-2026-4702

JIT miscompilation in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, T

9.8
CVE-2026-4701

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thund

9.8
CVE-2026-4700

Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thu

7.5
CVE-2026-4699

Incorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 149, Fire

9.8
CVE-2026-4698

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 149, Firefox ESR 115

7.5
CVE-2026-4697

Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 149, Fir

9.8
CVE-2026-4696

Use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34,

7.5
CVE-2026-4695

Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 149, Fir

7.5
CVE-2026-4694

Incorrect boundary conditions, integer overflow in the Graphics component. This vulnerability was fixed in Firefox 149,

7.5
CVE-2026-4693

Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 149, Firef

10.0
CVE-2026-4692

Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34,

9.8
CVE-2026-4691

Use-after-free in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 149, Firefox ESR 11

8.6
CVE-2026-4690

Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fix

10.0
CVE-2026-4689

Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fix

10.0
CVE-2026-4688

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 14

8.6
CVE-2026-4687

Sandbox escape due to incorrect boundary conditions in the Telemetry component. This vulnerability was fixed in Firefox

7.5
CVE-2026-4686

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox

7.5
CVE-2026-4685

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox

7.5
CVE-2026-4684

Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefo

8.8
CVE-2026-3847

Memory safety bugs present in Firefox 148.0.2. Some of these bugs showed evidence of memory corruption and we presume th

6.5
CVE-2026-3846

Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 148.0.2.

8.8
CVE-2026-3845

Heap buffer overflow in the Audio/Video: Playback component in Firefox for Android. This vulnerability was fixed in Fire

4.3
CVE-2026-2919

Malicious scripts could display attacker-controlled web content under spoofed domains in Focus for iOS by stalling a _se

9.8
CVE-2026-2807

Memory safety bugs present in Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption a

9.1
CVE-2026-2806

Uninitialized memory in the Graphics: Text component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

9.8
CVE-2026-2805

Invalid pointer in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

5.4
CVE-2026-2804

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148

7.5
CVE-2026-2803

Information disclosure, mitigation bypass in the Settings UI component. This vulnerability was fixed in Firefox 148 and

4.2
CVE-2026-2802

Race condition in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

7.5
CVE-2026-2801

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and

9.8
CVE-2026-2800

Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 148 and Thunder

9.8
CVE-2026-2799

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

8.8
CVE-2026-2798

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

9.8
CVE-2026-2797

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

9.8
CVE-2026-2796

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird

9.8
CVE-2026-2795

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

7.5
CVE-2026-2794

Information disclosure due to uninitialized memory in Firefox and Firefox Focus for Android. This vulnerability was fixe

9.8
CVE-2026-2793

Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird

9.8
CVE-2026-2792

Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these b

9.8
CVE-2026-2791

Mitigation bypass in the Networking: Cache component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Th

9.8
CVE-2026-2790

Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 148, Firefox ESR 140

9.8
CVE-2026-2789

Use-after-free in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Fir

9.8
CVE-2026-2788

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 148, Firefox ES

9.8
CVE-2026-2787

Use-after-free in the DOM: Window and Location component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.3

9.8
CVE-2026-2786

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thund

9.8
CVE-2026-2785

Invalid pointer in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thun

Frequently Asked Questions

How many CVEs affect Mozilla?

Mozilla has 7,140 CVE records in our database, including 872 critical and 3343 high severity vulnerabilities. 11 of these are listed in CISA's Known Exploited Vulnerabilities catalog.

What are the most severe Mozilla vulnerabilities?

Mozilla has 872 critical severity (CVSS 9.0+) and 3343 high severity (CVSS 7.0-8.9) vulnerabilities. 11 vulnerabilities are confirmed as actively exploited in the wild.

How can I scan for Mozilla vulnerabilities?

CyberStrike's AI-powered security agents automatically detect vulnerabilities in Mozilla products across your infrastructure. The platform provides continuous pentesting, DAST scanning, and real-time vulnerability monitoring with actionable remediation guidance.

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