CVE-2025-43529

Published Dec 17, 2025

Last updated 16 days ago

Exploit known CVSS high 8.8

WebKit

Zero-day

Mobile device

Overview

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.
Source: product-security@apple.com
NVD status: Analyzed
Products: safari, ipados, iphone_os, macos, tvos, visionos, watchos

Risk scores

CVSS 3.1

Type: Secondary
Base score: 8.8
Impact score: 5.9
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: Apple Multiple Products Use-After-Free WebKit Vulnerability
Exploit added on: Dec 15, 2025
Exploit action due: Jan 5, 2026
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.

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-416

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "3ECBF838-536C-47F9-9876-C526B8ED32EC",
            "versionEndExcluding": "26.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "6547722A-1226-4E23-B3AE-8692B07C2657",
            "versionEndExcluding": "18.7.3",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "8B71D919-1AA2-4F17-A834-4B703E36F7E2",
            "versionEndExcluding": "26.2",
            "versionStartIncluding": "26.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "8928A377-93BD-49AD-B4FE-5B2328EBDB70",
            "versionEndExcluding": "18.7.3",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "10FD01C3-D77F-4FE4-8195-F2C59FB1321C",
            "versionEndExcluding": "26.2",
            "versionStartIncluding": "26.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "825BB848-93B2-4A3E-86D8-16CB37DF9302",
            "versionEndExcluding": "26.2",
            "versionStartIncluding": "26.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "E0BBFB45-21F3-4B72-8DB1-BE72AFE0D2AB",
            "versionEndExcluding": "26.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "EB10D901-4800-4DF9-AB35-48017C178161",
            "versionEndExcluding": "26.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "15574823-ECE0-4394-99BC-6AFA34E599CC",
            "versionEndExcluding": "26.2",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Known exploits

Weaknesses

Social media

Configurations

Related CVEs

References