What is CVE-2003-0813?

CVE-2003-0813 is a vulnerability in Microsoft Windows 2000, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. Published 2003-11-17.

Is CVE-2003-0813 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microsoft Windows 2000

CVE-2003-0813

A multi-threaded race condition in the Windows RPC DCOM functionality with the MS03-039 patch installed allows remote attackers to cause a denial of service (crash or reboot) by causing two threads to process the same RPC request, which causes one thread to use memory after it has been freed, a different vulnerability than CVE-2003-0352 (Blaster/Nachi), CVE-2003-0715, and CVE-2003-0528, and as demonstrated by certain exploits against those vulnerabilities.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

Published 2003-11-17 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.1 (Medium). Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.170 (97.0th percentile), scored 2026-09-28.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.170 · newest: 0.170 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

lists.grok.org.uk/pipermail/full-disclosure/2003-October/011870.html (mailing-list, URL Repurposed)
marc.info/ (mailing-list, Third Party Advisory)
lists.grok.org.uk/pipermail/full-disclosure/2003-October/011901.html (mailing-list, URL Repurposed)
www.kb.cert.org/vuls/id/547820 (US Government Resource, Patch, Third Party Advisory, third-party-advisory)
oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:894 (Broken Link, signature, vdb-entry)
marc.info/ (mailing-list, Third Party Advisory)
www.us-cert.gov/cas/techalerts/TA04-104A.html (US Government Resource, Third Party Advisory, Broken Link, third-party-advisory)
docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-012 (vendor-advisory, Patch, Vendor Advisory)
marc.info/ (mailing-list, Third Party Advisory)
www.securitylab.ru/_exploits/rpc2.c.txt (Broken Link)

Frequently asked questions

What is CVE-2003-0813?: CVE-2003-0813 is a vulnerability in Microsoft Windows 2000, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. Published 2003-11-17.
Is CVE-2003-0813 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.