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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.
| Reporter | Title | Published | Views | Family All 81 |
|---|---|---|---|---|
 | strongSwan -- Heap-based buffer overflow in eap-mschapv2 plugin due to improper handling of failure request packets | 27 Oct 202500:00 | – | freebsd |
 | CVE-2025-62291 | 16 Jan 202600:00 | – | attackerkb |
 | CVE-2025-62291 | 16 Jan 202600:00 | – | alpinelinux |
 | Astra Linux – Vulnerability in StrongSwan | 13 Jan 202614:01 | – | astralinux |
 | The vulnerability of the EAP-MSCHAPv2 VPN-client plugin from StrongSwan allows a hacker to execute arbitrary code and trigger a service denial. | 2 Mar 202600:00 | – | bdu_fstec |
 | CVE-2025-62291 affecting package strongswan for versions less than 5.9.14-8 | 22 Jan 202618:04 | – | cbl_mariner |
| CVE-2025-62291 affecting package strongswan for versions less than 5.9.10-4 | 21 Jan 202616:02 | – | cbl_mariner |
 | CVE-2025-62291 | 27 Oct 202522:15 | – | circl |
 | strongSwan numerical error vulnerability | 16 Jan 202600:00 | – | cnnvd |
 | CVE-2025-62291 | 16 Jan 202600:00 | – | cve |
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18 Feb 2026 22:53Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.18.1
EPSS0.00879
SSVC