CVE-2025-0238
5.3
MEDIUM
CVSS 3.1
EPSS 0.16%
Description
Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Firefox ESR 115.19, Thunderbird 134, and Thunderbird 128.6.
How to fix CVE-2025-0238
To remediate CVE-2025-0238, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 128.6.0esr-1~deb11u3 or later
- —upgrade to 1:128.6.0esr-1~deb11u1 or later
Is CVE-2025-0238 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 128.6.0esr-1~deb11u3
- from 0, < 1:128.6.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |