8.8

CVE-2023-42917: Apple Multiple Products WebKit Memory Corruption Vulnerability

CVSS: 8.8v3.1HighKEVAnalyzed
AliasesRHSA-2023:7715RHSA-2023:7716UBUNTU-CVE-2023-42917
Published 30-11-2023Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2023-42917 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in Apple Multiple Products. It is known to be exploited: CISA lists it, first on 04-12-2023. EPSS estimates a 9.29% chance of exploitation in the next 30 days, higher than 95.3% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
9.29%
0%100%
Low · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 11
DSA-5575-1MGASA-2024-0148RHSA-2024:2126RHSA-2024:2982RHSA-2024:8492RHSA-2024:8496

Timeline

  1. 30-11-2023
    PublishedVulnerability first disclosed.
  2. 04-12-2023
    Added to CISA KEVApple Multiple Products WebKit Memory Corruption Vulnerability
  3. 25-12-2023
    CISA remediation dueApply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

9.29%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 9.29% on 19-09-2026

19-09-202619-10-2026
EPSS score
9.29%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
04-12-2023
Federal due date
25-12-2023

CISA required action

Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable. nvd.nist.gov/vuln/detail/CVE-2023-42917

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard45 products
  • openjdk-11-openj9All versions (No fix recorded)
  • openjdk-11-openj9-dbgAll versions (No fix recorded)
  • openjdk-11-openj9-default-jdkAll versions (No fix recorded)
  • openjdk-11-openj9-default-jvmAll versions (No fix recorded)
  • openjdk-11-openj9-default-policyAll versions (No fix recorded)
Redhat9 products
  • webkit2gtk3< 0:2.40.5-1.el9_3.1 | < 0:2.40.5-1.el8_9.1
  • webkit2gtk3-debuginfo< 0:2.40.5-1.el9_3.1 | < 0:2.40.5-1.el8_9.1
  • webkit2gtk3-debugsource< 0:2.40.5-1.el9_3.1 | < 0:2.40.5-1.el8_9.1
  • webkit2gtk3-devel< 0:2.40.5-1.el9_3.1 | < 0:2.40.5-1.el8_9.1
  • webkit2gtk3-devel-debuginfo< 0:2.40.5-1.el9_3.1 | < 0:2.40.5-1.el8_9.1
Wolfi8 products
  • openjdk-7All versions (No fix recorded)
  • openjdk-8< 8.482-r8
  • openjdk-8-dbg< 8.482-r8
  • openjdk-8-default-jdk< 8.482-r8
  • openjdk-8-default-jvm< 8.482-r8
Apple5 products
  • ios and ipados≥ unspecified, < 17.1
  • ipados< 15.8.1 | ≥ 16.0, < 16.7.3 | ≥ 17.0, < 17.1.2
  • iphone_os< 15.8.1 | ≥ 16.0, < 16.7.3 | ≥ 17.0, < 17.1.2
  • macos≥ unspecified, < 14.1 | ≥ 14.0, < 14.1.2
  • safari≥ unspecified, < 17.1 | < 17.1.2
Ubuntu5 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.42.3-0ubuntu0.22.04.1 | < 2.42.3-1
  • webkitgtkAll versions (No fix recorded)
  • wpewebkitAll versions (No fix recorded)
Debian3 products
  • webkit2gtk< 2.42.3-1~deb12u1 | < 2.42.3-1
  • wpewebkitAll versions (No fix recorded) | < 2.42.3-1
  • debian_linuxEOL11.0 | 12.0
Fedoraproject1 product
Webkitgtk1 product

8 vendors · 77 products

References

33 links
Show all 33 references