Debian/firefox-esr: critical 10
Sandbox escape in the Remote Settings Client component. This vulnerability was fixed in Firefox 154, Thunderbird 154, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 140.15, and
Action: Upgrade firefox-esr to 140.15.0esr-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 140.15.0esr-1 | - |
Fixed versions
| 140.15.0esr-1 |
Sources
- osv: DEBIAN-CVE-2026-75874#Debian:14/firefox-esr
- https://security-tracker.debian.org/tracker/CVE-2026-75874
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