What is CVE-2004-0210?

CVE-2004-0210 is a high-severity vulnerability in Microsoft Interix, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2004-08-06.

How severe is CVE-2004-0210?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2004-0210 known to be exploited?

Yes. CVE-2004-0210 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.

Buffer overflow in Microsoft Interix

CVE-2004-0210

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.

Vulnerability class: Buffer Overflow

Published 2004-08-06 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.072 (94.3th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.072 · newest: 0.072 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-03-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-03-24.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.us-cert.gov/cas/techalerts/TA04-196A.html (US Government Resource, Patch, Third Party Advisory, Broken Link, third-party-advisory)
www.kb.cert.org/vuls/id/647436 (US Government Resource, Patch, Third Party Advisory, third-party-advisory)
oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:2166 (Broken Link, signature, vdb-entry)
docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-020 (vendor-advisory, Patch, Vendor Advisory)
oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:2847 (Broken Link, signature, vdb-entry)
exchange.xforce.ibmcloud.com/vulnerabilities/16590 (VDB Entry, Third Party Advisory, vdb-entry)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2004-0210?: CVE-2004-0210 is a high-severity vulnerability in Microsoft Interix, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2004-08-06.
How severe is CVE-2004-0210?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2004-0210 known to be exploited?: Yes. CVE-2004-0210 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.