CVE-2025-62291
strongswan - security update
8.1
HIGH
CVSS 3.1
EPSS 0.02%
Description
In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow.
How to fix CVE-2025-62291
To remediate CVE-2025-62291, upgrade the affected package to a fixed version below.
- Alpine/strongswan—upgrade to 5.9.13-r2 or later
- —upgrade to 5.9.1-1+deb11u5 or later
- —upgrade to 5.9.1-1+deb11u5 or later
- —upgrade to 5.9.8-5+deb12u2 or later
Is CVE-2025-62291 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 5.9.13-r2
- from 0, < 5.9.1-1+deb11u5
- from 0, < 5.9.1-1+deb11u5
- from 0, < 5.9.8-5+deb12u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |