Security Vulnerabilities
Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
9.1
EPSS Score
0.0
Published
2026-03-24
Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
10.0
EPSS Score
0.0
Published
2026-03-24
Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-03-24
Denial-of-service in the Libraries component in NSS. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-03-24
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
6.5
EPSS Score
0.0
Published
2026-03-24
Memory safety bugs present in Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-03-24
Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-03-24
Information disclosure in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-03-24
Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-03-24
Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-03-24