VulnerabilityModified

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.

EXPLOIT ×2 ✓HIGH 10.0EPSS 17.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 17.8%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.

Description

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 2.0: 10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS: 17.78% probability · 97th percentile
Public exploits: 2 in Exploit-DB · verified · first 22 May 2000
CISA KEV: Not listed
Affected: gnome/gdm · caldera/openlinux · suse/suse linux
Source: cve@mitre.org

EPSS trend

EPSS 17.8% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-ID	Title	Type	Published	Verified
EDB-19948 source ↗	gdm 1.0.x/2.0.x BETA/2.2.0 - XDMCP Buffer Overflow (2)linux · AbraxaS	remote	22 May 2000	yes
EDB-19947 source ↗	gdm 1.0.x/2.0.x BETA/2.2.0 - XDMCP Buffer Overflow (1)linux · Chris Evans	remote	22 May 2000	yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.