Mozilla: >> Firefox Security Vulnerabilities
Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
CVSS Score
9.8
EPSS Score
0.001
Published
2026-02-24
Malicious scripts that interrupt new tab page loading could cause desynchronization between the address bar and page content, allowing the attacker to spoof arbitrary HTML under a trusted domain. This vulnerability was fixed in Firefox for iOS 147.2.1.
CVSS Score
4.3
EPSS Score
0.0
Published
2026-02-16
Heap buffer overflow in libvpx. This vulnerability was fixed in Firefox 147.0.4, Firefox ESR 140.7.1, Firefox ESR 115.32.1, Thunderbird 140.7.2, and Thunderbird 147.0.2.
CVSS Score
8.8
EPSS Score
0.0
Published
2026-02-16
Mitigation bypass in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 147.0.2.
CVSS Score
6.5
EPSS Score
0.001
Published
2026-01-27
Use-after-free in the Layout: Scrolling and Overflow component. This vulnerability was fixed in Firefox 147.0.2.
CVSS Score
8.8
EPSS Score
0.001
Published
2026-01-27
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS Score
6.5
EPSS Score
0.0
Published
2026-01-13
Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-01-13
Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS Score
4.3
EPSS Score
0.0
Published
2026-01-13
Information disclosure in the XML component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-01-13
Denial-of-service in the DOM: Service Workers component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-01-13