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Vulnerabilities

Vulnerability · CVE-2025-62230

A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup.

Published Oct 30, 2025 · catalog updated Apr 20, 2026 · Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

Check if you run it

No confirmed exploitation is on record for CVE-2025-62230. EPSS is 0.28%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.28%
Remediation
Vendor / distro source
Affected products
vendor Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support patch: 0:1.20.4-33.el7_9

A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support patch: 0:1.20.4-33.el7_9patch: 0:1.20.4-33.el7_9

How to fix CVE-2025-62230

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-62230. EPSS is 0.28%. Act only if a listed version of Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support is installed.

Which versions are affected?

Compare what you have installed with Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support patch: 0:1.20.4-33.el7_9 patch: 0:1.20.4-33.el7_9. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.28%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 30, 2025 · EUVD

    Detected

    A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

  2. Apr 20, 2026 · EUVD

    Updated

    A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

Sources

  • CVE.orgVulnerability recordCVE-2025-62230

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-62230

    30-day exploitation probability 0.28%

    first.org
  • EUVDVulnerability recordEUVD-2025-36902

    A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a cr

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.