CVE-2009-4409 json
The (1) CHAP and (2) MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator (PPPAC) function in Internet Initiative Japan SE…
published 16y ago modified 4mo ago also EUVD-2009-4376
- cvss
- 2.6
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
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.
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1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
secunia.com
/advisories/37628
third-party-advisory, vendor-advisory
-
seil.jp
/seilseries/security/2009/a00697.php
vendor-advisory
-
securityfocus.com
/bid/37293
vdb-entry
-
jvn.jp
/en/jp/JVN49602378/index.html
third-party-advisory
-
osvdb.org
/61118
vdb-entry
-
jvndb.jvn.jp
/ja/contents/2009/JVNDB-2009-000079.html
third-party-advisory
Sources
- CVE List CVE-2009-4409
- NVD CVE-2009-4409
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