8.8

CVE-2025-43529: Apple Multiple Products Use-After-Free WebKit Vulnerability

CVSS: 8.8v3.1HighKEVAnalyzed
AliasesUBUNTU-CVE-2025-43529DEBIAN-CVE-2025-43529
Published 17-12-2025Last modified 21-09-2026
Open JSON

Vulnerability summary

CVE-2025-43529 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 15-12-2025. EPSS estimates a 8.76% chance of exploitation in the next 30 days, higher than 95.1% 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
8.76%
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 19 · Related 6
DLA-4414-1DSA-6083-1OPENSUSE-SU-2026:20065-1RHSA-2025:23663RHSA-2025:23700RHSA-2025:23967

Timeline

  1. 15-12-2025
    Added to CISA KEVApple Multiple Products Use-After-Free WebKit Vulnerability
  2. 17-12-2025
    PublishedVulnerability first disclosed.
  3. 05-01-2026
    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 Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

8.76%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 8.76% on 19-09-2026

19-09-202619-10-2026
EPSS score
8.76%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
15-12-2025
Federal due date
05-01-2026

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/125884 support.apple.com/en-us/125892 support.apple.com/en-us/125885 support.apple.com/en-us/125886 support.apple.com/en-us/125889 nvd.nist.gov/vuln/detail/CVE-2025-43529

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apple8 products
Ubuntu5 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.50.4-0ubuntu0.22.04.1 | < 2.50.4-0ubuntu0.24.04.1 | < 2.50.4-0ubuntu0.25.10.1
  • webkitgtkAll versions (No fix recorded)
  • wpewebkitAll versions (No fix recorded)
Debian2 products
  • webkit2gtk< 2.50.4-1~deb12u1 | < 2.50.4-1~deb13u1 | < 2.50.4-1
  • wpewebkitAll versions (No fix recorded) | < 2.50.4-1

3 vendors · 15 products

References

13 links
Show all 13 references