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Vulnerability record · CVE-2008-6899 · published 5 August 2009

CVE-2008-6899: Freesshd memory buffer overflow vulnerability

FFreesshd · Freesshd

Multiple buffer overflows in freeSSHd 1.2.1 allow remote authenticated users to cause a denial of service (crash) and execute arbitrary code via a long (1) open, (2) unlink, (3) mkdir, (4) rmdir, or (5) stat SFTP command.

9.0 CVSS 2.0 High EPSS 5.3% · top 7.7% CWE-119 · Memory buffer overflow
9.0CVSS 2.0 base score
5.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

Multiple buffer overflows in freeSSHd 1.2.1 allow remote authenticated users to cause a denial of service (crash) and execute arbitrary code via a long (1) open, (2) unlink, (3) mkdir, (4) rmdir, or (5) stat SFTP command.

AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

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

References

LinkTags
http://www.bmgsec.com.au/advisories/freeSSHd-bof.txt Exploit
http://www.securityfocus.com/archive/1/499486/100/0/threaded
http://www.securityfocus.com/bid/32972 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/52434
http://www.bmgsec.com.au/advisories/freeSSHd-bof.txt Exploit
http://www.securityfocus.com/archive/1/499486/100/0/threaded
http://www.securityfocus.com/bid/32972 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/52434

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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%9.3CVE-2012-6066Freesshd improper authentication vulnerabilityfreeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demonstrated by an OpenSSH client w…EPSS 40%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-2008-6899), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.