Debian/firefox-esr: high 8.8
Sandbox escape due to integer overflow 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.
Action: Upgrade firefox-esr to 140.7.0esr-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 140.7.0esr-1 | - |
Fixed versions
| 140.7.0esr-1 |
Sources
- osv: DEBIAN-CVE-2026-0880#Debian:14/firefox-esr
- https://security-tracker.debian.org/tracker/CVE-2026-0880
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