CVE-2025-8029
HIGH severity · CVSS 8.1 · CWE-80
8.1CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactNone
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
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/mfsa2025-56/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-58/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-59/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-61/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-62/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-63/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1928021
- https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html