CVE-2007-6428: The ProcGetReservedColormapEntries function in the TOG-CUP extension in X.Org Xserver before 1.4.1 allows cont

Q: How do I fix CVE-2007-6428?

tog-cup: mitigate or apply the listed mitigation; xserver: upgrade to newer than 1.4. Exact commands for each OS are on this page.

Q: Is CVE-2007-6428 being exploited?

CVE-2007-6428 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2007-6428 affect?

CVE-2007-6428 affects tog-cup, xserver. Severity is medium (CVSS 5.0). The ProcGetReservedColormapEntries function in the TOG-CUP extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to read the contents of arbitrary memory locations via a request containing a 32-bit value that is imprope

Q: How urgent is CVE-2007-6428?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 5.0MITIGATEUPGRADE

CVE-2007-6428 is a medium-severity flaw (CVSS 5.0) affecting tog-cup, xserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The ProcGetReservedColormapEntries function in the TOG-CUP extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to read the contents of arbitrary memory locations via a request containing a 32-bit value that is improperly used as an array index.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Published	2008-01-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: x.org

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2008-01-18 23:00 UTCPublished CVE record published
2026-06-16 22:48 UTCUpdated Record last modified

x.org tog-cup MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tog-cup || rpm -q tog-cup || tog-cup --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

x.org xserver UPGRADE

Affected: <= 1.4

Fixed in: newer than 1.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xserver || rpm -q xserver || xserver --version

2. UPGRADE to newer than 1.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xserver

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xserver

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2007-6428?

tog-cup: mitigate or apply the listed mitigation; xserver: upgrade to newer than 1.4. Exact commands for each OS are on this page.

Is CVE-2007-6428 being exploited?

CVE-2007-6428 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2007-6428 affect?

CVE-2007-6428 affects tog-cup, xserver. Severity is medium (CVSS 5.0). The ProcGetReservedColormapEntries function in the TOG-CUP extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to read the contents of arbitrary memory locations via a request containing a 32-bit value that is imprope

How urgent is CVE-2007-6428?

Priority 37/100. No elevated risk signals yet.

References

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