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Firefox — Vulnerabilities & Security Advisories 1233

All 1233 CVE vulnerabilities found in Firefox, with AI-generated Chinese analysis, references, and POCs.

Vendor: Mozilla

CVE IDTitleCVSSSeverityPaused
CVE-2026-6756 Mitigation bypass in Firefox for Android 8.1AIHighAI2026-04-21
CVE-2026-6755 Mitigation bypass in the DOM: postMessage component 6.5AIMediumAI2026-04-21
CVE-2026-6754 Use-after-free in the JavaScript Engine component 9.8AICriticalAI2026-04-21
CVE-2026-6753 Incorrect boundary conditions in the WebRTC component 9.1AICriticalAI2026-04-21
CVE-2026-6752 Incorrect boundary conditions in the WebRTC component 9.1AICriticalAI2026-04-21
CVE-2026-6751 Uninitialized memory in the Audio/Video: Web Codecs component 9.1AICriticalAI2026-04-21
CVE-2026-6750 Privilege escalation in the Graphics: WebRender component 9.8AICriticalAI2026-04-21
CVE-2026-6749 Information disclosure due to uninitialized memory in the Graphics: Canvas2D component 7.5AIHighAI2026-04-21
CVE-2026-6748 Uninitialized memory in the Audio/Video: Web Codecs component 9.1AICriticalAI2026-04-21
CVE-2026-6747 Use-after-free in the WebRTC component 9.8AICriticalAI2026-04-21
CVE-2026-6746 Use-after-free in the DOM: Core & HTML component 9.8AICriticalAI2026-04-21
CVE-2026-5735 Memory safety bugs fixed in Firefox 149.0.2 and Thunderbird 149.0.2 9.8 -2026-04-07
CVE-2026-5734 Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 9.8 -2026-04-07
CVE-2026-5733 Incorrect boundary conditions in the Graphics: WebGPU component 8.1AIHighAI2026-04-07
CVE-2026-5732 Incorrect boundary conditions, integer overflow in the Graphics: Text component 8.8AIHighAI2026-04-07
CVE-2026-5731 Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2 8.8AIHighAI2026-04-07
CVE-2026-4729 Memory safety bugs fixed in Firefox 149 and Thunderbird 149 9.8 -2026-03-24
CVE-2026-4721 Memory safety bugs fixed in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149 9.8 -2026-03-24
CVE-2026-4720 Memory safety bugs fixed in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149 9.8 -2026-03-24
CVE-2026-4719 Incorrect boundary conditions in the Graphics: Text component 9.1 -2026-03-24
CVE-2026-4728 Spoofing issue in the Privacy: Anti-Tracking component 4.3 -2026-03-24
CVE-2026-4718 Undefined behavior in the WebRTC: Signaling component 5.3 -2026-03-24
CVE-2026-4726 Denial-of-service in the XML component 7.5 -2026-03-24
CVE-2026-4727 Denial-of-service in the Libraries component in NSS 7.5 -2026-03-24
CVE-2026-4717 Privilege escalation in the Netmonitor component 9.8 -2026-03-24
CVE-2026-4715 Uninitialized memory in the Graphics: Canvas2D component 8.8 -2026-03-24
CVE-2026-4716 Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component 6.5 -2026-03-24
CVE-2026-4714 Incorrect boundary conditions in the Audio/Video component 9.1 -2026-03-24
CVE-2026-4713 Incorrect boundary conditions in the Graphics component 9.1 -2026-03-24
CVE-2026-4712 Information disclosure in the Widget: Cocoa component 7.5 -2026-03-24

All 1233 known CVE vulnerabilities affecting Firefox with full Chinese analysis, references, and POCs where available.