5.5

CVE-2011-4327: openbsd openssh

CVSS: 5.5v3.1MediumModified
Published 03-02-2014Last modified 29-05-2026
Open JSON

Vulnerability summary

CVE-2011-4327 is a medium (CVSS 5.5) vulnerability in openbsd openssh. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-02-2014
    PublishedVulnerability first disclosed.
  2. 29-05-2026
    Last modifiedVulnerability information updated.

Description

ssh-keysign.c in ssh-keysign in OpenSSH before 5.8p2 on certain platforms executes ssh-rand-helper with unintended open file descriptors, which allows local users to obtain sensitive key information via the ptrace system call.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

0.00 pp

From 0.42% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Openbsd1 product
  • openssh≤ 5.8 | 1.2 | 1.2.1 | 1.2.2 | 1.2.3 | 1.2.27 | 1.3 | 1.5 | 1.5.7 | 1.5.8 | 2 | 2.1 | 2.1.1 | 2.2 | 2.3 | 2.3.1 | 2.5 | 2.5.1 | 2.5.2 | 2.9 | 2.9.9 | 2.9.9p2 | 2.9p1 | 2.9p2 | 3.0 | 3.0.1 | 3.0.1p1 | 3.0.2 | 3.0.2p1 | 3.0p1 | 3.1 | 3.1p1 | 3.2 | 3.2.2 | 3.2.2p1 | 3.2.3p1 | 3.3 | 3.3p1 | 3.4 | 3.4p1 | 3.5 | 3.5p1 | 3.6 | 3.6.1 | 3.6.1p1 | 3.6.1p2 | 3.7 | 3.7.1 | 3.7.1p1 | 3.7.1p2 | 3.8 | 3.8.1 | 3.8.1p1 | 3.9 | 3.9.1 | 3.9.1p1 | 4.0 | 4.0p1 | 4.1 | 4.1p1 | 4.2 | 4.2p1 | 4.3 | 4.3p1 | 4.3p2 | 4.4 | 4.4p1 | 4.5 | 4.6 | 4.7 | 4.8 | 4.9 | 5.0 | 5.1 | 5.2 | 5.3 | 5.4 | 5.5 | 5.6 | 5.7

1 vendor · 1 product

References

2 links