How severe is CVE-2003-0549?

CVE-2003-0549 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-0549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0549?

CVE-2003-0549 primarily affects Gnome Gdm. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-0549?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2003-0549 published?

CVE-2003-0549 was published on 2003-08-27 and last updated on 2026-06-16.

CVE-2003-0549

CVE-2003-0549 is a medium-severity vulnerability in Gnome Gdm with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gnome Gdm
Published: 2003-08-27
Last modified: 2026-06-16

Description

The X Display Manager Control Protocol (XDMCP) support for GDM before 2.4.1.6 allows attackers to cause a denial of service (daemon crash) via a short authorization key name.

Frequently asked questions

What is CVE-2003-0549?: The X Display Manager Control Protocol (XDMCP) support for GDM before 2.4.1.6 allows attackers to cause a denial of service (daemon crash) via a short authorization key name.
How severe is CVE-2003-0549?: CVE-2003-0549 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-0549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0549?: CVE-2003-0549 primarily affects Gnome Gdm. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0549 published?: CVE-2003-0549 was published on 2003-08-27 and last updated on 2026-06-16.

References

Affected products (22)

cpe:2.3:a:gnome:gdm:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:gnome:gdm:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:gnome:gdm:2.4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:gnome:gdm:2.4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:gnome:gdm:2.4.1.3:*:*:*:*:*:*:*
cpe:2.3:a:gnome:gdm:2.4.1.4:*:*:*:*:*:*:*
cpe:2.3:a:gnome:gdm:2.4.1.5:*:*:*:*:*:*:*
cpe:2.3:a:gnome:gdm:2.4.1.6:*:*:*:*:*:*:*
cpe:2.3:a:redhat:kdebase:2.0_beta2.45:*:i386:*:*:*:*:*
cpe:2.3:a:redhat:kdebase:2.0_beta2.45:*:ppc:*:*:*:*:*
cpe:2.3:a:redhat:kdebase:2.2.3.1.20:*:i386:*:*:*:*:*
cpe:2.3:a:redhat:kdebase:2.2.3.1.20:*:ia64:*:*:*:*:*
cpe:2.3:a:redhat:kdebase:2.2.3.1.22:*:i386:*:*:*:*:*
cpe:2.3:a:redhat:kdebase:2.4.0.7.13:*:i386:*:*:*:*:*
cpe:2.3:a:redhat:kdebase:2.4.1.3.5:*:i386:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:2.1:*:advanced_server:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:2.1:*:advanced_server_ia64:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:2.1:*:enterprise_server:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:2.1:*:enterprise_server_ia64:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:2.1:*:workstation:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:2.1:*:workstation_ia64:*:*:*:*:*
cpe:2.3:o:redhat:linux_advanced_workstation:2.1:*:*:*:*:*:*:*

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