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Fencer Vulns
critical 10.0

CVE-2000-0491 in the critical feed json

Buffer overflow in the XDMCP parsing code of GNOME gdm, KDE kdm, and wdm allows remote attackers to execute arbitrary commands or cause a d…

published 2000-05-24 26 y ago modified 2026-06-16 4 mo ago also EUVD-2000-0489

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
17.8%
EPSS 17.8% chance of exploitation in 30 days, percentile 97%
public exploits
2
Exploit-DB

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2000-0491 updated

security flaw

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-19948)
  2. Published

Exploit prediction

17.78% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-19948 gdm 1.0.x/2.0.x BETA/2.2.0 - XDMCP Buffer Overflow (2) remote, 2000-05-22
  • EDB-19947 gdm 1.0.x/2.0.x BETA/2.2.0 - XDMCP Buffer Overflow (1) remote, 2000-05-22

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.