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Vulnerability record · CVE-2008-0852 · published 21 February 2008

CVE-2008-0852: Freesshd vulnerability

FFreesshd · Freesshd

freeSSHd 1.2 and earlier allows remote attackers to cause a denial of service (crash) via a SSH2_MSG_NEWKEYS packet to TCP port 22, which triggers a NULL pointer dereference.

5.0 CVSS 2.0 Medium EPSS 6.2% · top 6.7%
5.0CVSS 2.0 base score
6.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

freeSSHd 1.2 and earlier allows remote attackers to cause a denial of service (crash) via a SSH2_MSG_NEWKEYS packet to TCP port 22, which triggers a NULL pointer dereference.

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

Affected products

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

References

LinkTags
http://aluigi.altervista.org/adv/freesshdnull-adv.txt
http://secunia.com/advisories/29002 Vendor Advisory
http://www.securityfocus.com/archive/1/488363/100/0/threaded
http://www.securityfocus.com/bid/27845 Exploit
http://www.vupen.com/english/advisories/2008/0591
http://aluigi.altervista.org/adv/freesshdnull-adv.txt
http://secunia.com/advisories/29002 Vendor Advisory
http://www.securityfocus.com/archive/1/488363/100/0/threaded
http://www.securityfocus.com/bid/27845 Exploit
http://www.vupen.com/english/advisories/2008/0591

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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-2008-6899Freesshd 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%analysed

Source: NIST National Vulnerability Database (record CVE-2008-0852), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.