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Fencer Vulns
high 7.5

CVE-2006-5794 json

Unspecified vulnerability in the sshd Privilege Separation Monitor in OpenSSH before 4.5 causes weaker verification that authentication has…

published 2006-11-08 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-5778

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Unspecified vulnerability in the sshd Privilege Separation Monitor in OpenSSH before 4.5 causes weaker verification that authentication has been successful, which might allow attackers to bypass authentication. NOTE: as of 20061108, it is believed that this issue is only exploitable by leveraging vulnerabilities in the unprivileged process, which are not known to exist.

Patch / fix

  • openssh Debian 14, Debian 13, Debian 12 1:4.3p2-6

debian advisories DEBIAN-CVE-2006-5794

  • openssh RHEL 3 3.6.1p2-33.30.13
  • openssh RHEL 4 3.9p1-8.RHEL4.17.1
  • openssh-server RHEL 3 3.6.1p2-33.30.13
  • openssh-server RHEL 4 3.9p1-8.RHEL4.17.1
  • openssh-askpass RHEL 3 3.6.1p2-33.30.13
  • openssh-askpass RHEL 4 3.9p1-8.RHEL4.17.1
  • openssh-clients RHEL 3 3.6.1p2-33.30.13
  • openssh-clients RHEL 4 3.9p1-8.RHEL4.17.1

red hat advisories RHSA-2006:0738

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2006-5794 updated

OpenSSH privilege separation flaw

  • Red Hat Desktop version 3 openssh 3.6.1p2-33.30.13, openssh-server 3.6.1p2-33.30.13, openssh-askpass 3.6.1p2-33.30.13, openssh-clients 3.6.1p2-33.30.13, openssh-askpass-gnome 3.6.1p2-33.30.13 Red Hat Enterprise Linux AS version 3 openssh 3.6.1p2-33.30.13, openssh-server 3.6.1p2-33.30.13, openssh-askpass 3.6.1p2-33.30.13, openssh-clients 3.6.1p2-33.30.13, openssh-askpass-gnome 3.6.1p2-33.30.13 Red Hat Enterprise Linux AS version 4 openssh 3.9p1-8.RHEL4.17.1, openssh-server 3.9p1-8.RHEL4.17.1, openssh-askpass 3.9p1-8.RHEL4.17.1, openssh-clients 3.9p1-8.RHEL4.17.1, openssh-askpass-gnome 3.9p1-8.RHEL4.17.1 Red Hat Enterprise Linux Desktop version 4 openssh 3.9p1-8.RHEL4.17.1, openssh-server 3.9p1-8.RHEL4.17.1, openssh-askpass 3.9p1-8.RHEL4.17.1, openssh-clients 3.9p1-8.RHEL4.17.1, openssh-askpass-gnome 3.9p1-8.RHEL4.17.1 Red Hat Enterprise Linux ES version 3 openssh 3.6.1p2-33.30.13, openssh-server 3.6.1p2-33.30.13, openssh-askpass 3.6.1p2-33.30.13, openssh-clients 3.6.1p2-33.30.13, openssh-askpass-gnome 3.6.1p2-33.30.13 Red Hat Enterprise Linux ES version 4 openssh 3.9p1-8.RHEL4.17.1, openssh-server 3.9p1-8.RHEL4.17.1, openssh-askpass 3.9p1-8.RHEL4.17.1, openssh-clients 3.9p1-8.RHEL4.17.1, openssh-askpass-gnome 3.9p1-8.RHEL4.17.1
    +2 more products
    Red Hat Enterprise Linux WS version 3 openssh 3.6.1p2-33.30.13, openssh-server 3.6.1p2-33.30.13, openssh-askpass 3.6.1p2-33.30.13, openssh-clients 3.6.1p2-33.30.13, openssh-askpass-gnome 3.6.1p2-33.30.13 Red Hat Enterprise Linux WS version 4 openssh 3.9p1-8.RHEL4.17.1, openssh-server 3.9p1-8.RHEL4.17.1, openssh-askpass 3.9p1-8.RHEL4.17.1, openssh-clients 3.9p1-8.RHEL4.17.1, openssh-askpass-gnome 3.9p1-8.RHEL4.17.1
    fixed: vendor fix RHSA-2006:0738

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.23% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns 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.