CVE-2000-0491

CVE-2000-0491 is a critical-severity vulnerability in Gnome Gdm with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

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.

Frequently asked questions

What is 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.
How severe is CVE-2000-0491?
CVE-2000-0491 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2000-0491 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0491?
CVE-2000-0491 primarily affects Gnome Gdm. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0491?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2000-0491 published?
CVE-2000-0491 was published on 2000-05-24 and last updated on 2026-06-16.

References

Affected products (4)

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