8.8

CVE-2023-43000: Apple Multiple products Use-After-Free Vulnerability

CVSS: 8.8v3.1HighKEVAnalyzed
AliasesUBUNTU-CVE-2023-43000DEBIAN-CVE-2023-43000
Published 05-11-2025Last modified 21-09-2026
Open JSON

Vulnerability summary

CVE-2023-43000 is a high (CVSS 8.8) Use After Free vulnerability in Apple Multiple Products. It is known to be exploited: CISA lists it, first on 05-03-2026. EPSS estimates a 4.04% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
4.04%
0%100%
Low · +0.14 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 15 · Related 5
DSA-5527-1OPENSUSE-SU-2026:20065-1RHSA-2024:2126RHSA-2024:2982RHSA-2024:8492RHSA-2024:8496

Timeline

  1. 05-11-2025
    PublishedVulnerability first disclosed.
  2. 05-03-2026
    Added to CISA KEVApple Multiple products Use-After-Free Vulnerability
  3. 26-03-2026
    CISA remediation dueApply mitigations per vendor instructions.
  4. 21-09-2026
    Last modifiedVulnerability information updated.

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

4.04%

Chance of exploitation in the next 30 days

Percentile

91%

Versus all other CVEs

30-day change

+0.14 pp

From 3.90% on 19-09-2026

19-09-202619-10-2026
EPSS score
4.04%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
05-03-2026
Federal due date
26-03-2026

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. support.apple.com/en-us/120324 support.apple.com/en-us/120331 support.apple.com/en-us/120338 nvd.nist.gov/vuln/detail/CVE-2023-43000

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (cloud.google.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Apple5 products
  • ios and ipados≥ unspecified, < 16.6 | ≥ unspecified, < 15.8.7
  • ipados< 15.8.7 | ≥ 16.0, < 16.6
  • iphone_os< 15.8.7 | ≥ 16.0, < 16.6
  • macos≥ unspecified, < 13.5 | < 13.5
  • safari≥ unspecified, < 16.6 | < 16.6
Ubuntu5 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.42.1-0ubuntu0.22.04.1
  • webkitgtkAll versions (No fix recorded)
  • wpewebkitAll versions (No fix recorded)
Debian2 products
  • webkit2gtk< 2.42.1-1~deb12u1 | < 2.42.0-1
  • wpewebkitAll versions (No fix recorded) | < 2.42.0-1

3 vendors · 12 products

References

11 links
Show all 11 references