CVE-2009-4409 describes a vulnerability in the Internet Initiative Japan SEIL/B1 firmware (versions 1.00 through 2.52) where the PPP Access Concentrator's CHAP and MS-CHAP-V2 authentication mechanisms reuse the same challenge for each attempt. This design flaw enables remote attackers to bypass authentication through a replay attack. The vulnerability has a low CVSS score of 2.6, indicating a network-based attack with high complexity, resulting in a partial integrity impact without affecting confidentiality or availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.00CPE matchmatch criteria | cpe:2.3:h:iij:seil\/b1:1.00:*:*:*:*:*:*:* | ||
2.01CPE matchmatch criteria | cpe:2.3:h:iij:seil\/b1:2.01:*:*:*:*:*:*:* | ||
2.10CPE matchmatch criteria | cpe:2.3:h:iij:seil\/b1:2.10:*:*:*:*:*:*:* | ||
2.20CPE matchmatch criteria | cpe:2.3:h:iij:seil\/b1:2.20:*:*:*:*:*:*:* | ||
2.30CPE matchmatch criteria | cpe:2.3:h:iij:seil\/b1:2.30:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:H/Au:N/C:N/I:P/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.