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CVE-2025-62291

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CVE-2025-62291

Published: Jan 16, 2026

Modified: Jan 16, 2026

PUBLISHED

CVSS v3.1

8.1

HIGH

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.

VendorProductVersions

strongSwan

strongSwan

affected
4.2.12 - < 6.0.3

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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