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Fencer Intel
critical 9.3

CVE-2012-5975 in the critical feed json

The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6.2.5, and 6.3.0 thr…

published 2012-12-04 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-5849

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
35.9%
EPSS 35.9% chance of exploitation in 30 days, percentile 98%
public exploits
3
Metasploit, Exploit-DB

Summary

The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6.2.5, and 6.3.0 through 6.3.2 on UNIX and Linux, when old-style password authentication is enabled, allows remote attackers to bypass authentication via a crafted session involving entry of blank passwords, as demonstrated by a root login session from a modified OpenSSH client with an added input_userauth_passwd_changereq call in sshconnect2.c.

Timeline

  1. First public exploit (Metasploit exploit/unix/ssh/tectia_passwd_changereq)
  2. Published

Exploit prediction

35.87% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/unix/ssh/tectia_passwd_changereq Tectia SSH USERAUTH Change Request Password Reset Vulnerability metasploit exploit, excellent rank, 2012-12-01
  • EDB-23156 (SSH.com Communications) SSH Tectia - USERAUTH Change Request Password Reset (Metasploit) remote, 2012-12-05
  • EDB-23082 (SSH.com Communications) SSH Tectia (SSH < 2.0-6.1.9.95 / Tectia 6.1.9.95) - Remote Authentication Bypass remote, 2012-12-02

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.