CVE-2025-43510

Published Dec 12, 2025

Last updated 3 months ago

Exploit known CVSS high 7.8

Splunk

Zero-day

Supply chain

Mobile device

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-43510 is identified as a memory corruption issue or a race condition vulnerability affecting multiple Apple operating systems, including watchOS, iOS, iPadOS, macOS (Tahoe, Sonoma, Sequoia), visionOS, and tvOS, across various versions. This flaw stems from insufficient lock state checking within the kernel's inter-process communication (IPC) or shared memory management subsystems. A malicious application can exploit CVE-2025-43510 to cause unexpected changes in memory shared between processes. This manipulation can lead to critical data corruption and unexpected system behavior. The vulnerability has been associated with the "DarkSword" exploit chain, which can be used by local attackers to achieve privilege escalation and sandbox escapes. Apple has addressed this issue in specific updated versions of the affected software.

Description: A memory corruption issue was addressed with improved lock state checking. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may cause unexpected changes in memory shared between processes.
Source: product-security@apple.com
NVD status: Analyzed
Products: ipados, iphone_os, macos, tvos, visionos, watchos

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.8
Impact score: 5.9
Exploitability score: 1.8
Vector string: CVSS:3.1/AV:L/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 Improper Locking Vulnerability
Exploit added on: Mar 20, 2026
Exploit action due: Apr 3, 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-667

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "819E8F86-A336-49A2-853F-249459279A59",
            "versionEndExcluding": "18.7.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:ipados:26.0:*:*:*:*:*:*:*",
            "matchCriteriaId": "4173F942-2CF6-447E-A942-948F6EF6CE77",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "7B98B4A6-EFB0-4651-BF56-06917E7CEC85",
            "versionEndExcluding": "18.7.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:iphone_os:26.0:*:*:*:*:*:*:*",
            "matchCriteriaId": "E29A276A-7091-42B2-B893-6A5801A0716E",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "9827CBDC-8C03-46BA-B534-8533F0975804",
            "versionEndExcluding": "14.8.2",
            "versionStartIncluding": "14.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "4BE8199E-63D1-496C-B107-52853CFC2311",
            "versionEndExcluding": "15.7.2",
            "versionStartIncluding": "15.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:macos:26.0:*:*:*:*:*:*:*",
            "matchCriteriaId": "551159EE-8311-4A13-802D-85871DAB5E77",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "290E0D29-CB5B-45A7-9FE3-FD2030B1D1A4",
            "versionEndExcluding": "26.1",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "7DFD3616-65CA-4E5C-849C-3C20ACBCB610",
            "versionEndExcluding": "26.1",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "9F9D7F76-13FB-407C-94E5-221B93021568",
            "versionEndExcluding": "26.1",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.