CVE-2025-43510: Apple Multiple Products Improper Locking Vulnerability

CISA Known Exploited Vulnerabilities

Name

Apple Multiple Products Improper Locking Vulnerability

Vendor

Apple

Product

Multiple Products

Added to the catalog

2026-03-20

Due date for US federal agencies

2026-04-03

Weaknesses

CWE-667

Catalog version

2026.10.30

Apple watchOS, iOS, iPadOS, macOS, visionOS, and tvOS contain an improper locking vulnerability that could allow a malicious application to cause unexpected changes in memory shared between processes.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://support.apple.com/en-us/125632
• https://support.apple.com/en-us/125633
• https://support.apple.com/en-us/125634
• https://support.apple.com/en-us/125635
• https://support.apple.com/en-us/125636
• https://support.apple.com/en-us/125637
• https://support.apple.com/en-us/125638
• https://support.apple.com/en-us/125639
• https://nvd.nist.gov/vuln/detail/CVE-2025-43510

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2025-12-12T21:15:55.843

Last modified

2026-10-07T11:10:00.153

Weaknesses

CWE-667

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.

References

• https://support.apple.com/en-us/125632 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/125633 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/125634 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/125635 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/125636 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/125637 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/125638 (Release Notes, Vendor Advisory)
• https://support.apple.com/en-us/125639 (Release Notes, Vendor Advisory)
• https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/ (Technical Description)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43510 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:22.836Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-43510

CVE record

Assigner

apple

State

PUBLISHED

Published

2025-12-12T20:56:38.131Z

Updated

2026-04-02T18:16:23.175Z

Problem types

A malicious application may cause unexpected changes in memory shared between processes

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.

References

• https://support.apple.com/en-us/125632
• https://support.apple.com/en-us/125633
• https://support.apple.com/en-us/125634
• https://support.apple.com/en-us/125635
• https://support.apple.com/en-us/125636
• https://support.apple.com/en-us/125637
• https://support.apple.com/en-us/125638
• https://support.apple.com/en-us/125639

Read on 2026-11-03T02:16:37.345Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/43xxx/CVE-2025-43510.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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