CVE-2025-3029
HIGH severity · CVSS 7.3 · CWE-290
7.3CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactLow
Integrity impactLow
Availability impactLow
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2025-20/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-22/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-23/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-24/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1952213
- https://lists.debian.org/debian-lts-announce/2025/04/msg00005.html