🔐 CVE Alert

CVE-2025-2830

MEDIUM 6.3

Information Disclosure of /tmp directory listing

CVSS Score
6.3
EPSS Score
0.0%
EPSS Percentile
0th

By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.

Vendor mozilla
Product thunderbird
Ecosystems
Industries
Technology
Published Apr 15, 2025
Last Updated Apr 13, 2026
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Affected Versions

Mozilla / Thunderbird
All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1956379 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-26/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-27/

Credits

Dario Weißer