CVE-2003-0507

Stack-based buffer overflow in Active Directory in Windows 2000 before SP4 allows remote attackers to cause a denial of service (reboot) and possibly execute arbitrary code via an LDAP version 3 search request with a large number of (1) "AND," (2) "OR," and possibly other statements, which causes LSASS.EXE to crash.

Published: 2003-08-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-0507 is rated Moderate Risk (64.1/100): CVSS High severity, with high exploitation likelihood (EPSS 26.63%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2003-0507

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-20 26.75% 26.63% -0.13%
2 2026-06-15 44.80% 26.75% -18.04%
3 2025-12-28 — 44.80% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-0507

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2003-0507

Affected software / configurations for CVE-2003-0507

Vendor Product Version Raw CPE
microsoft windows_2000 — cpe:2.3:o:microsoft:windows_2000:*:sp3:*:*:*:*:*:*

References for CVE-2003-0507

cvelogic Threat Intelligence