The POSIX component of Microsoft Windows NT and Windows 2000 allows local users to execute arbitrary code via certain parameters, possibly by modifying message length values and causing a buffer overflow.
CVE-2004-0210
Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.
- Actively exploited in the wild (CISA-KEV)
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 9.0(high)
- EPSS
- 93.8%
- KEV
- ⚠ Exploited
Published
August 6, 2004
Last Modified
June 16, 2026
Advisory Details (3)
Auto-updated May 19, 2026Microsoft Security Bulletin MS04-020 - Important | Microsoft Learn
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-020VU#647436 - Microsoft Windows contains a buffer overflow in the POSIX subsystem
http://www.kb.cert.org/vuls/id/647436Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 88× in last 7d / 377× 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.
Showing the most recent 100 of 595 total refreshes for this CVE.
- 2026-07-14 01:12 UTCEG score recompute
- 2026-07-14 01:12 UTCGHSA enrichment
- 2026-07-13 20:59 UTCEG score recompute
- 2026-07-13 20:59 UTCGHSA enrichment
- 2026-07-13 17:07 UTCCISA KEV update
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- 2026-07-13 04:06 UTCGHSA enrichment
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- 2026-07-12 06:54 UTCEG score recompute
- 2026-07-12 06:54 UTCGHSA enrichment
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- 2026-07-12 02:41 UTCGHSA enrichment
- 2026-07-11 22:28 UTCEG score recompute
- 2026-07-11 22:28 UTCGHSA enrichment
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- 2026-07-11 18:14 UTCGHSA enrichment
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- 2026-07-11 14:02 UTCGHSA enrichment
- 2026-07-11 09:47 UTCEG score recompute
- 2026-07-11 09:47 UTCGHSA enrichment
- 2026-07-11 08:22 UTCEPSS rescore
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- 2026-07-11 05:34 UTCEG score recompute
- 2026-07-11 05:34 UTCGHSA enrichment
- 2026-07-11 01:20 UTCEG score recompute
- 2026-07-11 01:20 UTCGHSA enrichment
- 2026-07-10 21:07 UTCEG score recompute
- 2026-07-10 21:07 UTCGHSA enrichment
- 2026-07-10 17:52 UTCCISA KEV update
- 2026-07-10 16:54 UTCEG score recompute
- 2026-07-10 16:54 UTCGHSA enrichment
- 2026-07-10 12:41 UTCEG score recompute
- 2026-07-10 12:41 UTCGHSA enrichment
- 2026-07-10 08:28 UTCEG score recompute
- 2026-07-10 08:28 UTCGHSA enrichment
- 2026-07-10 04:15 UTCEG score recompute
- 2026-07-10 04:15 UTCGHSA enrichment
- 2026-07-09 23:59 UTCEG score recompute
- 2026-07-09 23:59 UTCGHSA enrichment
- 2026-07-09 19:46 UTCEG score recompute
- 2026-07-09 19:46 UTCGHSA enrichment
- 2026-07-09 15:33 UTCEG score recompute
- 2026-07-09 15:32 UTCGHSA enrichment
- 2026-07-09 11:17 UTCEG score recompute
- 2026-07-09 11:16 UTCGHSA enrichment
- 2026-07-09 07:03 UTCEG score recompute
- 2026-07-09 07:03 UTCGHSA enrichment
- 2026-07-09 02:50 UTCEG score recompute
- 2026-07-09 02:50 UTCGHSA enrichment
- 2026-07-08 22:38 UTCEG score recompute
- 2026-07-08 22:38 UTCGHSA enrichment
- 2026-07-08 18:25 UTCEG score recompute
- 2026-07-08 18:25 UTCGHSA enrichment
- 2026-07-08 15:09 UTCEPSS rescore
- 2026-07-08 14:12 UTCEG score recompute
- 2026-07-08 14:12 UTCGHSA enrichment
- 2026-07-08 09:57 UTCEG score recompute
- 2026-07-08 09:57 UTCGHSA enrichment
- 2026-07-08 05:45 UTCEG score recompute
- 2026-07-08 05:45 UTCGHSA enrichment
- 2026-07-08 01:29 UTCEG score recompute
- 2026-07-08 01:29 UTCGHSA enrichment
- 2026-07-07 21:17 UTCEG score recompute
- 2026-07-07 21:16 UTCGHSA enrichment
- 2026-07-07 19:01 UTCCISA KEV update
- 2026-07-07 17:16 UTCCISA KEV update
- 2026-07-07 17:04 UTCEG score recompute
- 2026-07-07 17:03 UTCGHSA enrichment
- 2026-07-07 12:49 UTCEG score recompute
- 2026-07-07 12:49 UTCGHSA enrichment
- 2026-07-07 08:36 UTCEG score recompute
- 2026-07-07 08:35 UTCGHSA enrichment
- 2026-07-07 04:23 UTCEG score recompute
- 2026-07-07 04:23 UTCGHSA enrichment
- 2026-07-07 00:08 UTCEG score recompute
- 2026-07-07 00:08 UTCGHSA enrichment
- 2026-07-06 19:55 UTCEG score recompute
- 2026-07-06 19:55 UTCGHSA enrichment
- 2026-07-06 15:41 UTCEG score recompute
- 2026-07-06 15:41 UTCGHSA enrichment
- 2026-07-06 11:27 UTCEG score recompute
- 2026-07-06 11:27 UTCGHSA enrichment
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- 2026-07-06 07:13 UTCGHSA enrichment
- 2026-07-06 03:00 UTCEG score recompute
- 2026-07-06 03:00 UTCGHSA enrichment
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-24277✓ verifiedFirst seen Jul 16, 2004
Microsoft Windows NT 4.0/2000 - POSIX Subsystem Local Buffer Overflow / Local Privilege Escalation (MS04-020)
Open source ↗
Related CVEs(same CWE)
Same CWE
10 shownCWE-120
- CVE-2010-10016EG 10.0CRITICAL
- CVE-2012-10035EG 10.0CRITICAL
- CVE-2009-0948EG 9.8CRITICAL
- CVE-2006-3100EG 9.8CRITICAL
- CVE-2009-5041EG 9.8CRITICAL
- CVE-2010-5333EG 9.8EPSS 97%CRITICAL
- CVE-2013-1331NVD 7.8EG 9.0 KEVEPSS 100%HIGH
- CVE-2013-0641NVD 7.8EG 9.0 KEVEPSS 98%HIGH
- CVE-2012-2763NVD 0.0EG 9.0EPSS 100%NONE
- CVE-2011-4862NVD 0.0EG 9.0EPSS 100%NONE
Frequently asked(6)
What is CVE-2004-0210?
When was CVE-2004-0210 disclosed?
Is CVE-2004-0210 actively exploited?
What is the CVSS score of CVE-2004-0210?
Which products are affected by CVE-2004-0210?
How do I remediate CVE-2004-0210?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2004-0210
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