CVE-2003-0533
HighExploitedPublic exploitStack-based buffer overflow in certain Active Directory service functions in LSASRV.DLL of the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, XP SP1, Server 2003, NetMeeting, Windows 98, and Windows ME, allows remote…
Published Jun 1, 2004 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2003-0533 is a high-severity vulnerability (CVSS 7.5 v2) affecting Netmeeting (Microsoft), Windows 2000 (Microsoft), Windows 2003 Server (Microsoft) and 4 more products.
- It is exploited in the wild, listed in Industry KEV feed since May 13, 2004. Public exploit code is available.
- EPSS estimates a 85% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
85%
Higher than 99.7% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
Stack-based buffer overflow in certain Active Directory service functions in LSASRV.DLL of the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, XP SP1, Server 2003, NetMeeting, Windows 98, and Windows ME, allows remote attackers to execute arbitrary code via a packet that causes the DsRolerUpgradeDownlevelServer function to create long debug entries for the DCPROMO.LOG log file, as exploited by the Sasser worm.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | May 13, 2004 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
8 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| NetmeetingMicrosoft | See advisory | n/a |
| Windows 2000Microsoft | See advisory | n/a |
| Windows 2003 ServerMicrosoft | r2 | n/a |
| Windows 98Microsoft | See advisory | n/a |
| Windows MeMicrosoft | See advisory | n/a |
Timeline
Added to Industry KEV feed
May 13, 2004
Publicly disclosed
Jun 1, 2004
Last updated
Apr 15, 2026
References
- advisoryTA04-104A
- patchVU#753212
- exploitMSF ms04_011_lsass.rb
- exploitVulnCheck exploitation report
- exploitExploitDB-16368
FAQ
Common Questions.
Stack-based buffer overflow in certain Active Directory service functions in LSASRV.DLL of the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, XP SP1, Server 2003, NetMeeting, Windows 98, and Windows ME, allows remote attackers to execute arbitrary code via a…
Affected: Netmeeting (Microsoft); Windows 2000 (Microsoft); Windows 2003 Server (Microsoft) versions r2, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 13, 2004.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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