CVE-2025-0247
Critical · 9.8CVSS
9.8
EPSS
10.6%
Published
Jan 7, 2025
CISA due date
—
The record
Memory safety bugs present in Firefox 133 and Thunderbird 133. 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 134 and Thunderbird 134.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Chainguard | firefox | 0 | 134.0-r0 |
| Wolfi | firefox | 0 | 134.0-r0 |
| openSUSE:Tumbleweed | MozillaFirefox | 0 | 134.0-1.1 |
Related vulnerabilities
- CVE-2026-4726 Denial-of-service in the XML component. Also affects firefox
- CVE-2026-4724 Undefined behavior in the Audio/Video component. Also affects firefox
- CVE-2026-4729 Memory safety bugs present in Firefox 148 and Thunderbird 148. Also affects firefox
- CVE-2026-4722 Privilege escalation in the IPC component. Also affects firefox
- CVE-2026-4723 Use-after-free in the JavaScript Engine component. Also affects firefox
- CVE-2026-4727 Denial-of-service in the Libraries component in NSS. Also affects firefox
- CVE-2026-4728 Spoofing issue in the Privacy: Anti-Tracking component. Also affects firefox
- CVE-2026-4725 Sandbox escape due to use-after-free in the Graphics: Canvas2D component. Also affects firefox