CVE-2025-62291
HIGH8.1EPSS 0.02%strongswan - security update
Published: 1/16/2026Modified: 4/28/2026
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.
Affected packages (4)
- Alpine/strongswanfrom 0, < 5.9.13-r2
- Debian/strongswanfrom 0, < 5.9.1-1+deb11u5
- Debian/strongswanfrom 0, < 5.9.1-1+deb11u5
- Debian/strongswanfrom 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 |