CVE-2012-6066

NONECVSS 0.0Trending — 3 sources updated this weekWeaponized

0.0

freeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demonstrated by an OpenSSH client with modified versions of ssh.c and sshconnect2.c.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 98.9%
KEV: Not listed

Published

December 4, 2012

Last Modified

April 29, 2026

References (2)

cve@mitrehttp://archives.neohapsis.com/archives/fulldisclosure/2012-12/0012.html
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0012.html

Weakness Classification(1)

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

CWE-287Improper Authentication

Data Freshness Timeline

(refreshed 15× 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.

2026-06-02 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 13:41 UTCepss_batch
2026-05-29 01:39 UTCEG score recompute
2026-05-29 01:39 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 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-22 21:15 UTCepss_batch

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-24133✓ verified
First seen Jan 15, 2013
freeSSHd 1.2.6 - Authentication Bypass (Metasploit)
Open source ↗
Exploit-DBEDB-23079✓ verified
First seen Dec 2, 2012
freeFTPd 1.2.6 - Remote Authentication Bypass
Open source ↗
Exploit-DBEDB-23080✓ verified
First seen Dec 2, 2012
freeSSHd 2.1.3 - Remote Authentication Bypass
Open source ↗
Metasploitexploit/windows/ssh/freesshd_authbypass✓ verified
First seen Aug 11, 2010
Freesshd Authentication Bypass
Open source ↗

Frequently asked(4)

What is CVE-2012-6066?

CVE-2012-6066 is a none vulnerability published on December 4, 2012. freeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demonstrated by an OpenSSH client with modified versions of ssh.c and sshconnect2.c.

When was CVE-2012-6066 disclosed?

CVE-2012-6066 was first published in the National Vulnerability Database on December 4, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2012-6066 actively exploited?

CVE-2012-6066 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2012-6066?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-6066, 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-2012-6066

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2012-6066?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(4)

Related CVEs(same CWE)