The SMB implementation in the Server service in Microsoft Windows 2000 SP4, Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 does not use a sufficient source of entropy, which allows remote attackers to obtain access to files and other SMB resources via a large number of authentication requests, related to server-generated challenges, certain "duplicate values," and spoofing of an authentication token, aka "SMB NTLM Authentication Lack of Entropy Vulnerability."
CVE-2010-0231
- No confirmed exploitation signals yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 98.5%
- KEV
- Not listed
Published
February 10, 2010
Last Modified
April 29, 2026
References (6)
- secure@microsofthttp://www.us-cert.gov/cas/techalerts/TA10-040A.html
- secure@microsofthttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-012
- secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7751
- af854a3a-2127-422b-91ae-364da2661108http://www.us-cert.gov/cas/techalerts/TA10-040A.html
- af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-012
- af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7751
Data Freshness Timeline
(refreshed 4× in last 7d / 31× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-06 02:19 UTCEPSS rescore
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- 2026-06-14 23:14 UTCEPSS rescore
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- 2026-05-29 13:40 UTCEPSS rescore
- 2026-05-29 12:51 UTCEG score recompute
- 2026-05-29 12:51 UTCGHSA enrichment
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-22 21:15 UTCEPSS rescore
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- 2026-05-20 22:37 UTCEPSS rescore
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- 2026-05-18 21:29 UTCEPSS rescore
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Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-15266✓ verifiedFirst seen Oct 17, 2010
Microsoft Windows - NTLM Weak Nonce (MS10-012)
Open source ↗
Frequently asked(4)
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Dependency Blast Radius
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