CVE-2025-62291_CVE-2025-62291

8.1 / 10

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Basic Information

ID CVE-2025-62291

Source mitre

Published Jan 16, 2026 at 00:00

Modified Jan 16, 2026 at 19:07

Affected Product

Vendor strongSwan

Product strongSwan

Version 4.2.12

Affected Versions strongSwan strongSwan 4.2.12

CWE Classification

CWE-191

References

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    "lastseen": "",
    "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.",
    "published": "2026-01-16T00:00:00.000Z",
    "modified": "2026-01-16T19:07:43.455Z",
    "type": "cve",
    "title": "CVE-2025-62291",
    "source": "mitre",
    "references": "https://github.com/strongswan/strongswan/releases\nhttps://github.com/strongswan/strongswan/commits/master/src/libcharon/plugins/eap_mschapv2\nhttps://www.strongswan.org/blog/2025/10/27/strongswan-vulnerability-%28cve-2025-62291%29.html",
    "id": "CVE-2025-62291",
    "bulletinFamily": "",
    "cwe": [
        "CWE-191"
    ],
    "cvelist": null,
    "sourceData": "strongSwan strongSwan 4.2.12",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "strongSwan",
    "version": "4.2.12",
    "vendor": "strongSwan",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}