CVE-2000-0491

highpriority · attend · 56EPSS 0.178 · 97 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · functional

Likely / severe?

17.8% (97th) EPSS

CVSS 10 · high

Is it mine?

5 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v2.09highAV:N/AC:L/Au:N/C:C/I:C/A:C/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USLLM-inferredCWE-20USLLM-inferred

exploits (2)

Public proof-of-concept and weaponised exploit code.

EDB-19947gdm 1.0.x/2.0.x BETA/2.2.0 - XDMCP Buffer Overflow (1)functional · exploit_db
EDB-19948gdm 1.0.x/2.0.x BETA/2.2.0 - XDMCP Buffer Overflow (2)functional · exploit_db

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
caldera openlinuxall versionsnvdUScpe:2.3:o:caldera:openlinux:*:*:*:*:*:*:*:*
gnome gdm= 1.0nvdUScpe:2.3:a:gnome:gdm:*:*:*:*:*:*:*:*
suse suse linux= 6.2nvdUScpe:2.3:o:suse:suse_linux:*:*:*:*:*:*:*:*
suse suse linux= 6.4nvdUScpe:2.3:o:suse:suse_linux:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2000-05-24modified 2026-06-16

references (12)

External citations — patches, advisories, analysis.

scry

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