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Vulnerability record · CVE-2014-0317 · published 12 March 2014

CVE-2014-0317: Microsoft windows server 2003 improper input validation vulnerability

Microsoft · Windows Server 2003

The Security Account Manager Remote (SAMR) protocol implementation in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows Server 2012 Gold and R2 does not properly determine the user-lockout state, which makes it easier for remote attackers to bypass the account lockout policy and obtain access via a brute-force attack, aka "SAMR Security Feature Bypass Vulnerability."

5.4 CVSS 2.0 Medium EPSS 10% · top 4.5% CWE-20 · Improper input validationCWE-264 · Permissions and access controls
5.4CVSS 2.0 base score
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The Security Account Manager Remote (SAMR) protocol implementation in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows Server 2012 Gold and R2 does not properly determine the user-lockout state, which makes it easier for remote attackers to bypass the account lockout policy and obtain access via a brute-force attack, aka "SAMR Security Feature Bypass Vulnerability."

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

Affected products

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

References

LinkTags
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-016
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-016

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2014-0317), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.