ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-66287

A flaw was found in WebKitGTK.

Published Dec 4, 2025 · catalog updated Jun 29, 2026 · The WebKitGTK Team Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-66287. EPSS is 0.51%. Act only if a listed version of The WebKitGTK Team Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.51%
Remediation
Vendor / distro source
Affected products
vendor The WebKitGTK Team Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support patch: 0:2.50.3-2.el8_6

A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.

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 The WebKitGTK Team Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support patch: 0:2.50.3-2.el8_6patch: 0:2.50.3-2.el8_6

How to fix CVE-2025-66287

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-2025-66287. EPSS is 0.51%. Act only if a listed version of The WebKitGTK Team Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support is installed.

Which versions are affected?

Compare what you have installed with The WebKitGTK Team Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support patch: 0:2.50.3-2.el8_6 patch: 0:2.50.3-2.el8_6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.51%. 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. Dec 4, 2025 · EUVD

    Detected

    A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.

  2. Jun 29, 2026 · EUVD

    Updated

    A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.

Sources

  • CVE.orgVulnerability recordCVE-2025-66287

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66287

    30-day exploitation probability 0.51%

    first.org
  • EUVDVulnerability recordEUVD-2025-201244

    A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 4, 2026
  • CVE.orgOct 26, 2026
  • EUVDOct 26, 2026