CVE-2025-62291

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{"bugzilla": {"description": "strongswan: strongSwan: Arbitrary Code Execution and Denial of Service via crafted EAP-MSCHAPv2 message", "id": "2430429", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430429"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-191", "details": ["A flaw was found in the strongSwan eap-mschapv2 plugin (client-side). A remote attacker, specifically a malicious Extensible Authentication Protocol - Microsoft Challenge-Handshake Authentication Protocol version 2 (EAP-MSCHAPv2) server, could exploit this by sending a specially crafted message between 6 and 8 bytes in size. This crafted message can cause an integer underflow, leading to a heap-based buffer overflow. This vulnerability could potentially result in arbitrary code execution, allowing the attacker to take control of the affected system, or lead to a denial of service."], "name": "CVE-2025-62291", "public_date": "2026-01-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-62291\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-62291\nhttps://github.com/strongswan/strongswan/commits/master/src/libcharon/plugins/eap_mschapv2\nhttps://github.com/strongswan/strongswan/releases\nhttps://www.strongswan.org/blog/2025/10/27/strongswan-vulnerability-%28cve-2025-62291%29.html"], "statement": "For this vulnerability to be exploited, a connection must be made to a malicious server.", "threat_severity": "Important"}

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