8.8

CVE-2023-32439: Apple Multiple Products WebKit Type Confusion Vulnerability

CVSS: 8.8v3.1HighKEVAnalyzed
AliasesUBUNTU-CVE-2023-32439DEBIAN-CVE-2023-32439DSA-5449-1
Published 23-06-2023Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2023-32439 is a high (CVSS 8.8) Type Confusion vulnerability in Apple Multiple Products. It is known to be exploited: CISA lists it, first on 23-06-2023. EPSS estimates a 23.97% chance of exploitation in the next 30 days, higher than 97.8% 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
23.97%
0%100%
High · +0.18 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 5
MGASA-2023-0229RHSA-2023:4201RHSA-2023:4202RHSA-2025:10364SUSE-SU-2023:3233-1SUSE-SU-2023:3237-1

Timeline

  1. 23-06-2023
    PublishedVulnerability first disclosed.
  2. 23-06-2023
    Added to CISA KEVApple Multiple Products WebKit Type Confusion Vulnerability
  3. 14-07-2023
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

A type confusion issue was addressed with improved checks. This issue is fixed in iOS 16.5.1 and iPadOS 16.5.1, iOS 15.7.7 and iPadOS 15.7.7, macOS Ventura 13.4.1, Safari 16.5.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

23.97%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

+0.18 pp

From 23.79% on 19-09-2026

19-09-202619-10-2026
EPSS score
23.97%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
23-06-2023
Federal due date
14-07-2023

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2023-32439

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apple5 products
  • ios and ipados≥ unspecified, < 15.7 | ≥ unspecified, < 16.5
  • ipados< 15.7.7 | ≥ 16.0, < 16.5.1
  • iphone_os< 15.7.7 | ≥ 16.0, < 16.5.1
  • macos≥ unspecified, < 13.4 | ≥ 13.0, < 13.4.1
  • safari≥ unspecified, < 16.5 | < 16.5.1
Ubuntu5 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.40.4-0ubuntu0.22.04.1
  • webkitgtkAll versions (No fix recorded)
  • wpewebkitAll versions (No fix recorded)
Debian2 products
  • webkit2gtk< 2.40.3-1 | < 2.40.3-2~deb11u1 | < 2.40.3-2~deb12u1
  • wpewebkitAll versions (No fix recorded) | < 2.40.3-1
Webkitgtk1 product

4 vendors · 13 products

References

14 links
Show all 14 references