CVE-2011-4327

MEDIUMNVD 5.5Trending — 3 sources updated this week

5.5

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 v3: 5.5
EG Score: 0.0(none)
EPSS: 30.7%
KEV: Not listed

Published

February 3, 2014

Last Modified

May 29, 2026

References (4)

secalert@redhathttp://www.openssh.com/txt/portable-keysign-rand-helper.adv
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=755640
af854a3a-2127-422b-91ae-364da2661108http://www.openssh.com/txt/portable-keysign-rand-helper.adv
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=755640

Vendor Advisories for CVE-2011-4327(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-9998-pmcc-vpg5
GitHub Security AdvisoriesLow
ssh-keysign.c in ssh-keysign in OpenSSH before 5.8p2 on certain platforms executes ssh-rand...

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:09 UTCepss_batch
2026-06-04 13:09 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 20:32 UTCEG score recompute
2026-05-28 20:32 UTCGHSA enrichment
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:41 UTCepss_batch

Frequently asked(5)

What is CVE-2011-4327?

CVE-2011-4327 is a medium vulnerability published on February 3, 2014. 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.

When was CVE-2011-4327 disclosed?

CVE-2011-4327 was first published in the National Vulnerability Database on February 3, 2014, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2011-4327 actively exploited?

CVE-2011-4327 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2011-4327?

CVE-2011-4327 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.

How do I remediate CVE-2011-4327?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4327, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2011-4327

📅 Published

🔄 Last Modified

🔗 References (4)

📣 Vendor Advisories for CVE-2011-4327(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)