CVE-2025-3029
7.3
HIGH
CVSS 3.1
EPSS 0.13%
Description
A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack. This vulnerability was fixed in Firefox 137, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.
How to fix CVE-2025-3029
To remediate CVE-2025-3029, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 128.9.0esr-1~deb11u1 or later
- —upgrade to 1:128.9.0esr-1~deb11u1 or later
Is CVE-2025-3029 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 128.9.0esr-1~deb11u1
- from 0, < 1:128.9.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |