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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 8/41
9.8
CVE-2026-2784

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunde

7.5
CVE-2026-2783

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed i

9.8
CVE-2026-2782

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunde

9.8
CVE-2026-2781

Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thun

9.8
CVE-2026-2780

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunde

9.8
CVE-2026-2779

Incorrect boundary conditions in the Networking: JAR component. This vulnerability was fixed in Firefox 148, Firefox ESR

10.0
CVE-2026-2778

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in F

9.8
CVE-2026-2777

Privilege escalation in the Messaging System component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33,

10.0
CVE-2026-2776

Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability

9.8
CVE-2026-2775

Mitigation bypass in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Fi

9.8
CVE-2026-2774

Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox

9.8
CVE-2026-2773

Incorrect boundary conditions in the Web Audio component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.3

9.8
CVE-2026-2772

Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33,

9.8
CVE-2026-2771

Undefined behavior in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, F

9.8
CVE-2026-2770

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33,

8.8
CVE-2026-2769

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

10.0
CVE-2026-2768

Sandbox escape in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thun

9.8
CVE-2026-2767

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

9.8
CVE-2026-2766

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

9.8
CVE-2026-2765

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

9.8
CVE-2026-2764

JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148,

9.8
CVE-2026-2763

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Fire

9.8
CVE-2026-2762

Integer overflow in the JavaScript: Standard Library component. This vulnerability was fixed in Firefox 148, Firefox ESR

10.0
CVE-2026-2761

Sandbox escape in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Fi

10.0
CVE-2026-2760

Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed i

9.8
CVE-2026-2759

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox

9.8
CVE-2026-2758

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox

9.8
CVE-2026-2757

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

9.8
CVE-2026-2634

Malicious scripts could cause desynchronization between the address bar and web content before a response is received in

8.8
CVE-2026-2447

Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32

4.3
CVE-2026-2032

Malicious scripts that interrupt new tab page loading could cause desynchronization between the address bar and page con

4.3
CVE-2026-0818

When a user explicitly requested Thunderbird to decrypt an inline OpenPGP message that was embedded in a text section of

8.8
CVE-2026-24869

Use-after-free in the Layout: Scrolling and Overflow component. This vulnerability was fixed in Firefox 147.0.2.

6.5
CVE-2026-24868

Mitigation bypass in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 147.0.2.

9.8
CVE-2026-0892

Memory safety bugs present in Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption a

8.1
CVE-2026-0891

Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these b

5.4
CVE-2026-0890

Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 147, Firefox

7.5
CVE-2026-0889

Denial-of-service in the DOM: Service Workers component. This vulnerability was fixed in Firefox 147 and Thunderbird 147

5.3
CVE-2026-0888

Information disclosure in the XML component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

4.3
CVE-2026-0887

Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Fir

5.3
CVE-2026-0886

Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32

6.5
CVE-2026-0885

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderb

9.8
CVE-2026-0884

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thund

5.3
CVE-2026-0883

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thun

8.8
CVE-2026-0882

Use-after-free in the IPC component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7,

10.0
CVE-2026-0881

Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

8.8
CVE-2026-0880

Sandbox escape due to integer overflow in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox E

9.8
CVE-2026-0879

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 1

8.0
CVE-2026-0878

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed

8.1
CVE-2026-0877

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firef

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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