CVE-2025-1011
8.8
HIGH
CVSS 3.1
EPSS 0.29%
Description
A bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker to leverage this to achieve code execution. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
How to fix CVE-2025-1011
To remediate CVE-2025-1011, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 128.7.0esr-1~deb11u1 or later
- —upgrade to 1:128.7.0esr-1~deb11u1 or later
Is CVE-2025-1011 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 128.7.0esr-1~deb11u1
- from 0, < 1:128.7.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |