8.8

CVE-2023-32435: Apple Multiple Products WebKit Memory Corruption Vulnerability

CVSS: 8.8v3.1HighKEVAnalyzed
AliasesUBUNTU-CVE-2023-32435DEBIAN-CVE-2023-32435
Published 23-06-2023Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2023-32435 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 23-06-2023. EPSS estimates a 22.95% chance of exploitation in the next 30 days, higher than 97.7% 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
22.95%
0%100%
High · +0.17 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 5
DSA-5396-1MGASA-2023-0229RHSA-2023:4201RHSA-2023:4202RHSA-2025:10364SUSE-SU-2023:3233-1

Timeline

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

Description

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Ventura 13.3, Safari 16.4, iOS 16.4 and iPadOS 16.4, iOS 15.7.7 and iPadOS 15.7.7. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

22.95%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

+0.17 pp

From 22.78% on 19-09-2026

19-09-202619-10-2026
EPSS score
22.95%

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-2023-32435

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apple5 products
  • ios and ipados≥ unspecified, < 15.7 | ≥ unspecified, < 16.4
  • ipados< 15.7.7 | ≥ 16.0, < 16.4
  • iphone_os< 15.7.7 | ≥ 16.0, < 16.4
  • macos≥ unspecified, < 13.3 | ≥ 13.0, < 13.3
  • safari≥ unspecified, < 16.4 | < 16.4
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< 2.40.0-1
  • wpewebkitAll versions (No fix recorded) | < 2.40.2-2

3 vendors · 12 products

References

11 links
Show all 11 references