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TI-2012-04984 Aliases CVE-2012-5975GHSA-rg8f-w58v-jv6v

The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0…

Priority HIGH 66CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
Security bypass
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-287.

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.

Why it matters now

EPSS 0.35874 98th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 36

CPEVersionsRoleVendor
cpe:2.3:a:ssh:tectia_server:6.0.4:*:*:*:*:*:*:*6.0.4VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.5:*:*:*:*:*:*:*6.0.5VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.6:*:*:*:*:*:*:*6.0.6VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.7:*:*:*:*:*:*:*6.0.7VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.8:*:*:*:*:*:*:*6.0.8VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.9:*:*:*:*:*:*:*6.0.9VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.10:*:*:*:*:*:*:*6.0.10VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.11:*:*:*:*:*:*:*6.0.11VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.12:*:*:*:*:*:*:*6.0.12VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.13:*:*:*:*:*:*:*6.0.13VulnerableSSH
  • cpe:2.3:a:ssh:tectia_server:6.0.4:*:*:*:*:*:*:* Versions 6.0.4 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.5:*:*:*:*:*:*:* Versions 6.0.5 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.6:*:*:*:*:*:*:* Versions 6.0.6 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.7:*:*:*:*:*:*:* Versions 6.0.7 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.8:*:*:*:*:*:*:* Versions 6.0.8 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.9:*:*:*:*:*:*:* Versions 6.0.9 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.10:*:*:*:*:*:*:* Versions 6.0.10 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.11:*:*:*:*:*:*:* Versions 6.0.11 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.12:*:*:*:*:*:*:* Versions 6.0.12 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.13:*:*:*:*:*:*:* Versions 6.0.13 Vulnerable ·SSH
Show 26 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:ssh:tectia_server:6.0.14:*:*:*:*:*:*:*6.0.14VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.17:*:*:*:*:*:*:*6.0.17VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.18:*:*:*:*:*:*:*6.0.18VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.19:*:*:*:*:*:*:*6.0.19VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.0.20.:*:*:*:*:*:*:*6.0.20.VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.0:*:*:*:*:*:*:*6.1.0VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.1:*:*:*:*:*:*:*6.1.1VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.2:*:*:*:*:*:*:*6.1.2VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.3:*:*:*:*:*:*:*6.1.3VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.4:*:*:*:*:*:*:*6.1.4VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.5:*:*:*:*:*:*:*6.1.5VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.6:*:*:*:*:*:*:*6.1.6VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.7:*:*:*:*:*:*:*6.1.7VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.8:*:*:*:*:*:*:*6.1.8VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.9:*:*:*:*:*:*:*6.1.9VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.1.12:*:*:*:*:*:*:*6.1.12VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.2.0:*:*:*:*:*:*:*6.2.0VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.2.1:*:*:*:*:*:*:*6.2.1VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.2.2:*:*:*:*:*:*:*6.2.2VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.2.3:*:*:*:*:*:*:*6.2.3VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.2.4:*:*:*:*:*:*:*6.2.4VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.2.5:*:*:*:*:*:*:*6.2.5VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.3.0:*:*:*:*:*:*:*6.3.0VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.3.1:*:*:*:*:*:*:*6.3.1VulnerableSSH
cpe:2.3:a:ssh:tectia_server:6.3.2:*:*:*:*:*:*:*6.3.2VulnerableSSH
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*all versionsRunning onLinux
  • cpe:2.3:a:ssh:tectia_server:6.0.14:*:*:*:*:*:*:* Versions 6.0.14 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.17:*:*:*:*:*:*:* Versions 6.0.17 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.18:*:*:*:*:*:*:* Versions 6.0.18 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.19:*:*:*:*:*:*:* Versions 6.0.19 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.0.20.:*:*:*:*:*:*:* Versions 6.0.20. Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.0:*:*:*:*:*:*:* Versions 6.1.0 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.1:*:*:*:*:*:*:* Versions 6.1.1 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.2:*:*:*:*:*:*:* Versions 6.1.2 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.3:*:*:*:*:*:*:* Versions 6.1.3 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.4:*:*:*:*:*:*:* Versions 6.1.4 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.5:*:*:*:*:*:*:* Versions 6.1.5 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.6:*:*:*:*:*:*:* Versions 6.1.6 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.7:*:*:*:*:*:*:* Versions 6.1.7 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.8:*:*:*:*:*:*:* Versions 6.1.8 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.9:*:*:*:*:*:*:* Versions 6.1.9 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.1.12:*:*:*:*:*:*:* Versions 6.1.12 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.2.0:*:*:*:*:*:*:* Versions 6.2.0 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.2.1:*:*:*:*:*:*:* Versions 6.2.1 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.2.2:*:*:*:*:*:*:* Versions 6.2.2 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.2.3:*:*:*:*:*:*:* Versions 6.2.3 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.2.4:*:*:*:*:*:*:* Versions 6.2.4 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.2.5:*:*:*:*:*:*:* Versions 6.2.5 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.3.0:*:*:*:*:*:*:* Versions 6.3.0 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.3.1:*:*:*:*:*:*:* Versions 6.3.1 Vulnerable ·SSH
  • cpe:2.3:a:ssh:tectia_server:6.3.2:*:*:*:*:*:*:* Versions 6.3.2 Vulnerable ·SSH
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions all versions Running on ·Linux

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-5975
  2. 2026-10-03 Alias added: GHSA-rg8f-w58v-jv6v

References

Exploit 2

Other 2

  • TI-2021-09231 SSH Tectia Client and Server before 6.4.19 on Windows have weak key generation. CVSS 3.1HIGH 8.8
  • TI-2005-04054 SSH Tectia Server 5.0.0 (A, F, and T), when allowing host-based authentication only… CVSS 2.0HIGH 7.5
  • TI-2008-04912 Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0… CVSS 3.1LOW 3.7
  • TI-2021-09232 SSH Tectia Client and Server before 6.4.19 on Windows allow local privilege escalation. CVSS 3.1HIGH 7.8
  • TI-2007-05397 ssh-signer in SSH Tectia Client and Server 5.x before 5.2.4, and 5.3.x before 5.3.6, on… CVSS 2.0HIGH 7.2
  • TI-2006-04168 Unquoted Windows search path vulnerability in multiple SSH Tectia products, including… CVSS 2.0HIGH 7.2
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences