9.3

CVE-2012-5975: ssh tectia_server Improper Authentication

CVSS: 9.3v2.0HighModified
Published 04-12-2012Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2012-5975 is a high (CVSS 9.3) Improper Authentication vulnerability in ssh tectia_server. EPSS estimates a 35.87% chance of exploitation in the next 30 days, higher than 98.4% of scored vulnerabilities. 4 public exploits are recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
35.87%
0%100%
High · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits4github, exploit-database, metasploit

Timeline

  1. 04-12-2012
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

35.87%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

0.00 pp

From 35.87% on 20-09-2026

20-09-202620-10-2026
EPSS score
35.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

4 found
  • githubUnverified

    Metasploit Framework

    Maturity: poc

  • exploit-databaseremotelinuxVerified

    (SSH.com Communications) SSH Tectia (SSH < 2.0-6.1.9.95 / Tectia 6.1.9.95) - Remote Authentication Bypass

    Maturity: weaponized

  • exploit-databaseremoteunixVerified

    (SSH.com Communications) SSH Tectia - USERAUTH Change Request Password Reset (Metasploit)

    Maturity: weaponized

Show all 4 exploits
  • MetasploitMetasploitremoteVerified

    Tectia SSH USERAUTH Change Request Password Reset Vulnerability

    exploit/unix/ssh/tectia_passwd_changereq

    Maturity: weaponized

Weaknesses

CWE · root cause

Affected systems

Ssh1 product
  • tectia_server6.0.4 | 6.0.5 | 6.0.6 | 6.0.7 | 6.0.8 | 6.0.9 | 6.0.10 | 6.0.11 | 6.0.12 | 6.0.13 | 6.0.14 | 6.0.17 | 6.0.18 | 6.0.19 | 6.0.20. | 6.1.0 | 6.1.1 | 6.1.2 | 6.1.3 | 6.1.4 | 6.1.5 | 6.1.6 | 6.1.7 | 6.1.8 | 6.1.9 | 6.1.12 | 6.2.0 | 6.2.1 | 6.2.2 | 6.2.3 | 6.2.4 | 6.2.5 | 6.3.0 | 6.3.1 | 6.3.2

1 vendor · 1 product

References

4 links