CVE-2025-59375
thunderbird - security update
7.5
HIGH
CVSS 3.1
EPSS 0.10%
Description
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
How to fix CVE-2025-59375
To remediate CVE-2025-59375, upgrade the affected package to a fixed version below.
- Alpine/expat—upgrade to 2.7.2-r0 or later
- Debian/expat—no fix listed
- —upgrade to 140.9.0esr-1~deb11u1 or later
- —upgrade to 140.9.0esr-1~deb11u1 or later
- —upgrade to 140.9.0esr-1~deb12u1 or later
- —upgrade to 1:140.9.0esr-1~deb11u1 or later
- —upgrade to 1:140.9.0esr-1~deb12u1 or later
- —upgrade to 1:140.9.0esr-1~deb11u1 or later
Is CVE-2025-59375 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (8)
- from 0, < 2.7.2-r0
- from 0
- from 0, < 140.9.0esr-1~deb11u1
- from 0, < 140.9.0esr-1~deb11u1
- from 0, < 140.9.0esr-1~deb12u1
- from 0, < 1:140.9.0esr-1~deb11u1
- from 0, < 1:140.9.0esr-1~deb12u1
- from 0, < 1:140.9.0esr-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |