How severe is CVE-2007-6427?

CVE-2007-6427 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2007-6427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-6427?

CVE-2007-6427 primarily affects X.org X Server. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-6427?

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-2007-6427 published?

CVE-2007-6427 was published on 2008-01-18 and last updated on 2026-06-16.

CVE-2007-6427

CVE-2007-6427 is a critical-severity vulnerability in X.org X Server with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: X.org X Server
Published: 2008-01-18
Last modified: 2026-06-16

Description

The XInput extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to execute arbitrary code via requests related to byte swapping and heap corruption within multiple functions, a different vulnerability than CVE-2007-4990.

Frequently asked questions

What is CVE-2007-6427?: The XInput extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to execute arbitrary code via requests related to byte swapping and heap corruption within multiple functions, a different vulnerability than CVE-2007-4990.
How severe is CVE-2007-6427?: CVE-2007-6427 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2007-6427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-6427?: CVE-2007-6427 primarily affects X.org X Server. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-6427?: 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-2007-6427 published?: CVE-2007-6427 was published on 2008-01-18 and last updated on 2026-06-16.

References

Affected products (21)

cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:7.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:7:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:8:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:10.2:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:10.3:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux:10.1:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:9:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:10:-:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:10:sp1:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:8:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_server:10:sp1:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_software_development_kit:10:sp1:*:*:*:*:*:*
cpe:2.3:o:suse:open_enterprise_server:-:*:*:*:*:*:*:*

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