Vulnerability Report

CVE-2000-0491

Title: XDMCP FORWARD_QUERY overflow in gdm/kdm/wdm

Memory Corruption

Proof Of Concept

PoC Available for CVE-2000-0491

CWE Category NVD-CWE-noinfo

Published Date May 24, 2000

Modified Date Jun 16, 2026

Exploit Status Available

Score 10.0 CVSS v2.0

Exploit Probability (EPSS)

17.78%

Vulnerability Summary

CVE-2000-0491: Buffer overflow in the XDMCP parsing code of GNOME gdm, KDE kdm, and wdm allows remote attackers to execute arbitrary commands or cause a denial of service via a long FORWARD_QUERY request.

Impacted Vendors

gnome 1

Reference Links

ftp://ftp.calderasystems.com/pub/OpenLinux/security/CSSA-2000-013.0.txt http://archives.neohapsis.com/archives/bugtraq/2000-05/0241.html http://archives.neohapsis.com/archives/bugtraq/2000-06/0025.html http://www.novell.com/linux/security/advisories/suse_security_announce_49.html http://www.securityfocus.com/bid/1233 http://www.securityfocus.com/bid/1279 http://www.securityfocus.com/bid/1370 ftp://ftp.calderasystems.com/pub/OpenLinux/security/CSSA-2000-013.0.txt http://archives.neohapsis.com/archives/bugtraq/2000-05/0241.html http://archives.neohapsis.com/archives/bugtraq/2000-06/0025.html http://www.novell.com/linux/security/advisories/suse_security_announce_49.html http://www.securityfocus.com/bid/1233 http://www.securityfocus.com/bid/1279 http://www.securityfocus.com/bid/1370

CVSS v2.0

Source Entity [email protected]

Severity HIGH

10.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2000-0491 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/19947

View Code

Exploit-DB https://www.exploit-db.com/exploits/19948

View Code

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 03, 2025 MODIFIED

Vulnerability data or affected products updated.

May 24, 2000 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Stack

No specific products linked.