CVE-2025-8029
8.1
HIGH
CVSS 3.1
EPSS 0.28%
Description
Thunderbird executed `javascript:` URLs when used in `object` and `embed` tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
How to fix CVE-2025-8029
To remediate CVE-2025-8029, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 128.13.0esr-1~deb11u1 or later
- —upgrade to 1:128.13.0esr-1~deb11u1 or later
Is CVE-2025-8029 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 128.13.0esr-1~deb11u1
- from 0, < 1:128.13.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |