8.1

CVE-2025-62291

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerstrongSwan
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Produkt strongSwan
Default Statusunaffected
Version 4.2.12
Version < 6.0.3
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.88% 0.543
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
cve@mitre.org 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-191 Integer Underflow (Wrap or Wraparound)

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

https://github.com/strongswan/strongswan/releases
https://github.com/strongswan/strongswan/commits/master/src/libcharon/plugins/eap_mschapv2
https://www.strongswan.org/blog/2025/10/27/strongswan-vulnerability-%28cve-2025-62291%29.html
https://lists.debian.org/debian-lts-announce/2025/11/msg00002.html