CVE-2025-43510
Published: 12 December 2025
Summary
CVE-2025-43510 is a high-severity Improper Locking (CWE-667) vulnerability in Apple Macos. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 46.3% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.
The strongest mitigations our analysis identified are NIST 800-53 SC-39 (Process Isolation) and SC-4 (Information in Shared System Resources).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Implements controls to protect system memory from unauthorized access, modification, or deletion, directly mitigating memory corruption from improper lock state checking.
Isolates processes to prevent a malicious application from causing unexpected changes in shared memory between processes.
Prevents unauthorized and unintended information transfer via shared system resources such as memory exploited by this vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Memory corruption in inter-process shared regions enables arbitrary code execution from a local unprivileged malicious application, directly facilitating exploitation for privilege escalation.
NVD 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…
more
26.1. A malicious application may cause unexpected changes in memory shared between processes.
Deeper analysisAI
CVE-2025-43510 is a memory corruption vulnerability addressed by improved lock state checking in multiple Apple operating systems. It affects versions of iOS and iPadOS prior to 18.7.2 and 26.1, macOS Sequoia prior to 15.7.2, macOS Sonoma prior to 14.8.2, macOS Tahoe prior to 26.1, tvOS prior to 26.1, visionOS prior to 26.1, and watchOS prior to 26.1. The issue, associated with CWE-667 (Improper Locking), enables a malicious application to cause unexpected changes in memory shared between processes.
Exploitation requires local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), and user interaction (UI:R), such as installing and running a malicious application. Attackers achieve high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H) with no change in scope (S:U), resulting in a CVSS v3.1 base score of 7.8.
Apple's security advisories detail patches in the listed fixed versions across affected platforms. Mitigation involves updating to iOS 18.7.2 or 26.1, iPadOS 18.7.2 or 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, or watchOS 26.1, as described in support documents at 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, and https://support.apple.com/en-us/125636.
Details
- CWE(s)
- KEV Date Added
- 20 March 2026