CVE-2009-4409

LowCVSS 2.6/10Last modified Jun 16, 2026

Description

The (1) CHAP and (2) MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator (PPPAC) function in Internet Initiative Japan SEIL/B1 firmware 1.00 through 2.52 use the same challenge for each authentication attempt, which allows remote attackers to bypass authentication via a replay attack.

Metrics

CVSS 2.0 2.6/10AV:N/AC:H/Au:N/C:N/I:P/A:N

Weakness enumeration

CWE-287

Affected software

No affected versions have been published.

Timeline

Published: Dec 23, 2009
Last modified: Jun 16, 2026
NVD status: Modified

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