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HIGH CISA KEV

CVE-2023-42917

CVSS v3

8.8

HIGH

EPSS Score

9.3 %

exploit probability, as of 2026-10-19

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • javaBitnamiall versions · fixed in 1.8.0and 2 other packages
  • webkit2gtk3AlmaLinux:9all versions · fixed in 2.40.5-1.el9_3.1and 3 other packages
  • webkit2gtk3AlmaLinux:8all versions · fixed in 2.40.5-1.el8_9.1.alma.1and 3 other packages

Vendor advisories

  • CVE-2023-42917 Red Hat Product Security515 products fixed · 9 known affected

    webkitgtk: Arbitrary Remote Code Execution

    webkitgtk as a component of Red Hat Enterprise Linux 6 · webkitgtk-devel as a component of Red Hat Enterprise Linux 6 · webkitgtk-doc as a component of Red Hat Enterprise Linux 6

  • RHSA-2025:10364 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: webkitgtk4 security update

  • RHSA-2024:9679 Red Hat Product Security66 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

  • RHSA-2024:9680 Red Hat Product Security19 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

  • RHSA-2024:9653 Red Hat Product Security84 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

  • RHSA-2024:9646 Red Hat Product Security46 products fixed

    Red Hat Security Advisory: webkit2gtk3 security update

6 more advisories

Full record on NVD

Description

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.

CISA Known Exploited Vulnerability

Date Added
2023-12-04
Patch Due Date
2023-12-25
Ransomware Use
Unknown

Technical details

Published
2023-11-30

Frequently asked questions

What is CVE-2023-42917?

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.

Is CVE-2023-42917 actively exploited?

Yes. CVE-2023-42917 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2023-12-25.

What is the CVSS score for CVE-2023-42917?

CVE-2023-42917 has a CVSS v3 base score of 8.8 (HIGH severity).

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