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CVE-2000-0491

44
FAUCET Score

CVE-2000-0491 describes a critical buffer overflow vulnerability in the XDMCP parsing code of GNOME gdm, KDE kdm, and wdm, affecting various Linux distributions including Caldera and SuSE. With a CVSS score of 10.0 (HIGH), this flaw allows unauthenticated remote attackers to execute arbitrary commands or cause a denial of service with low attack complexity. While not listed on the KEV catalog, exploit code is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:gnome:gdm:1.0:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:caldera:openlinux:*:*:*:*:*:*:*:*
6.2CPE matchmatch criteria
cpe:2.3:o:suse:suse_linux:6.2:*:*:*:*:*:*:*
6.4CPE matchmatch criteria
cpe:2.3:o:suse:suse_linux:6.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
17.78%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-19947 · May 22, 2000
This CVE's current EPSS score of 0.1778 is in the 95th percentile among its peer group of 51,455 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2000-0491

security flaw

May 21, 2000

References

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