CVE-2025-2830: By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of...
Description
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 affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.
Classification
CVE ID: CVE-2025-2830
Problem Types
Information Disclosure of /tmp directory listingAffected Products
Vendor: Mozilla
Product: Thunderbird, Thunderbird
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 7.6% (scored less or equal to compared to others)
EPSS Date: 2025-04-21 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-2830https://bugzilla.mozilla.org/show_bug.cgi?id=1956379
https://www.mozilla.org/security/advisories/mfsa2025-26/
https://www.mozilla.org/security/advisories/mfsa2025-27/