CVE-2025-2830
thunderbird - security update
6.3
MEDIUM
CVSS 3.1
EPSS 0.10%
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 was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.
How to fix CVE-2025-2830
To remediate CVE-2025-2830, upgrade the affected package to a fixed version below.
- —upgrade to 1:128.10.1esr-1~deb11u1 or later
- —upgrade to 1:128.10.1esr-1~deb11u1 or later
- —upgrade to 1:128.10.0esr-1~deb12u1 or later
Is CVE-2025-2830 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1:128.10.1esr-1~deb11u1
- from 0, < 1:128.10.1esr-1~deb11u1
- from 0, < 1:128.10.0esr-1~deb12u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |