Is CVE-2025-43529 being actively exploited?

Yes. CVE-2025-43529 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on December 15, 2025.

What is the CVSS score for CVE-2025-43529?

CVE-2025-43529 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2025-43529

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 8.8%EU EUVD: exploited

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.

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
EPSS score: 8.8% (95th percentile)
In CISA KEV: Yes, added December 15, 2025
In EU EUVD: Yes (EUVD-2025-203963)
Published: December 17, 2025
NVD last modified: October 7, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Apple Multiple Products Use-After-Free WebKit Vulnerability

Added to the KEV catalog on December 15, 2025; federal remediation due January 5, 2026.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2025-203963 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on September 21, 2026.

View on the EU Vulnerability Database

Affected products

apple / ipados
apple / iphone os
apple / macos
apple / safari
apple / tvos
apple / visionos
apple / watchos

Certified products that may be affected

20 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Apple macOS 26 Tahoe: FileVault - Apple Inc. - Common Criteria CCEVS-VR-VID-11696-2026 - active
Apple macOS 26 Tahoe - Apple Inc. - Common Criteria CCEVS-VR-VID-11695-2026 - active
Apple iOS 18: iPhone - Apple Inc. - Common Criteria CCEVS-VR-VID-11623-2025 - active
Apple iPadOS 18: iPad - Apple Inc. - Common Criteria CCEVS-VR-VID-11624-2025 - active
Strong Customer Authentication for Apple Pay on Apple Watch Series 10 with S10 running watchOS 11.4(watchOS 11.4 (build 22T251)) (ANSSI-CC-2025/35) - Apple Inc. - Common Criteria ANSSI-CC-2025/35 - active

See all 20 in the Security Certifications Explorer.

References

https://support.apple.com/en-us/125884(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/125885(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/125886(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/125889(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/125890(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/125891(Release Notes, Vendor Advisory)
https://support.apple.com/en-us/125892(Release Notes, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529(US Government Resource)

Last updated October 9, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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