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Vulnerability record · CVE-2018-9853 · published 10 July 2018

CVE-2018-9853: Freesshd improper privilege management vulnerability

FFreesshd · Freesshd

Insecure access control in freeSSHd version 1.3.1 allows attackers to obtain the privileges of the freesshd.exe process by leveraging the ability to login to an unprivileged account on the server.

9.8 CVSS 3.0 Critical EPSS 1.3% · top 31.0% CWE-269 · Improper privilege management
9.8CVSS 3.0 base score, v2 7.5
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Insecure access control in freeSSHd version 1.3.1 allows attackers to obtain the privileges of the freesshd.exe process by leveraging the ability to login to an unprivileged account on the server.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://medium.com/%40TheWindowsTwin/vulnerability-in-freesshd-5a0abc147d7a
https://medium.com/%40TheWindowsTwin/vulnerability-in-freesshd-5a0abc147d7a

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Related vulnerabilities

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

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%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-2018-9853), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.