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Advisory severityHigh8.8Red Hat Linux

High [CVE-2025-66287] Webkitgtk: processing maliciously crafted web content may lead to an unexpected process crash

This high-severity Red Hat Linux advisory covers CVE-2025-66287 affecting Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2025-66287 Source published Source updated

VulniPulse record published

CVE-2025-66287
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

Summary

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

To exploit this issue, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with an important severity.

Additionally, this issue can cause an unexpected process crash but the possibility of remote code execution is not discarded. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

Weakness: CWE-120.

Affected products named by the advisory: Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 13 more.

Is CVE-2025-66287 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2025-66287 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2025-66287?

Upgrade to a fixed release named by Red Hat:

  • webkitgtk4-0:2.50.3-2.el7_9
  • webkit2gtk3-0:2.50.3-1.el8_10
  • webkit2gtk3-0:2.50.3-2.el8_2
  • webkit2gtk3-0:2.50.3-2.el8_4
  • webkit2gtk3-0:2.50.3-2.el8_6
  • webkit2gtk3-0:2.50.3-2.el8_8
  • webkit2gtk3-0:2.50.3-1.el9_7
  • webkit2gtk3-0:2.50.3-1.el9_0
  • webkit2gtk3-0:2.50.3-1.el9_2
  • webkit2gtk3-0:2.50.3-1.el9_4
  • webkit2gtk3-0:2.50.3-1.el9_6
  • RHSA-2025:23583

10 more fixed releases are listed below.

Confirm against the vendor advisory before you patch.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Fixed versions
  • webkitgtk4-0:2.50.3-2.el7_9
  • webkit2gtk3-0:2.50.3-1.el8_10
  • webkit2gtk3-0:2.50.3-2.el8_2
  • webkit2gtk3-0:2.50.3-2.el8_4
  • webkit2gtk3-0:2.50.3-2.el8_6
  • webkit2gtk3-0:2.50.3-2.el8_8
  • webkit2gtk3-0:2.50.3-1.el9_7
  • webkit2gtk3-0:2.50.3-1.el9_0
  • webkit2gtk3-0:2.50.3-1.el9_2
  • webkit2gtk3-0:2.50.3-1.el9_4
  • webkit2gtk3-0:2.50.3-1.el9_6
  • RHSA-2025:23583
  • RHSA-2025:22789
  • RHSA-2025:23433
  • RHSA-2025:23434
  • RHSA-2025:23743
  • RHSA-2025:23742
  • RHSA-2025:22790
  • RHSA-2025:23452
  • RHSA-2025:23451
  • RHSA-2025:23591
  • RHSA-2025:23110

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

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