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Vulnerability record · CVE-2012-6066 · published 4 December 2012

CVE-2012-6066: Freesshd improper authentication vulnerability

FFreesshd · Freesshd

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.

9.3 CVSS 2.0 High EPSS 40% · top 1.4% CWE-287 · Improper authentication
9.3CVSS 2.0 base score
40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0012.html
http://archives.neohapsis.com/archives/fulldisclosure/2012-12/0012.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-9853Freesshd improper privilege management vulnerabilityInsecure access control in freeSSHd version 1.3.1 allows attackers to obtain the privileges of the freesshd.exe process by leveraging the ability to …EPSS 1.3%9.0CVE-2008-6899Freesshd memory buffer overflow vulnerabilityMultiple buffer overflows in freeSSHd 1.2.1 allow remote authenticated users to cause a denial of service (crash) and execute arbitrary code via a lo…EPSS 5.3%9.0CVE-2008-4762Freesshd memory buffer overflow vulnerabilityStack-based buffer overflow in freeSSHd 1.2.1 allows remote authenticated users to cause a denial of service (service crash) and potentially execute …EPSS 14%8.5CVE-2008-2573Freesshd memory buffer overflow vulnerabilityStack-based buffer overflow in SFTP in freeSSHd 1.2.1 allows remote authenticated users to execute arbitrary code via a long directory name in an SSH…EPSS 5.6%7.8CVE-2017-1000475Freesshd unquoted search path vulnerabilityFreeSSHd 1.3.1 version is vulnerable to an Unquoted Path Service allowing local users to launch processes with elevated privileges.EPSS 0.61%7.5CVE-2024-0723Freesshd improper resource shutdown vulnerabilityA vulnerability was found in freeSSHd 1.0.9 on Windows. It has been classified as problematic. This affects an unknown part. The manipulation leads t…EPSS 3.6%7.5CVE-2006-2407wodSSHServer ActiveX stack buffer overflow via key exchange stringA stack-based buffer overflow exists in the WeOnlyDo wodSSHServer ActiveX component (versions 1.2.7 and 1.3.3 DEMO), which is also embedded in FreeSS…EPSS 71%analysed5.0CVE-2009-3340Freesshd vulnerabilityUnspecified vulnerability in FreeSSHD 1.2.4 allows remote attackers to cause a denial of service via unknown vectors, as demonstrated by a certain mo…EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2012-6066), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.