Improper Locking Vulnerability Across Apple watchOS, iOS, iPadOS, macOS, visionOS, tvOS (CVE‑2025‑43510)
What It Is
Apple’s watchOS, iOS, iPadOS, macOS, visionOS, and tvOS share a common improper‑locking flaw. The defect allows a malicious application to alter memory that is intended to be shared safely between processes, opening a path to unauthorized code execution or data manipulation.
Exploitability
- No public proof‑of‑concept has been released.
- No confirmed active exploitation in the wild at the time of writing.
- Assigned a High severity rating (CVSS ≥ 7.0) by CISA, indicating a strong potential impact if an exploit were to emerge.
Affected Products
- Apple watchOS
- Apple iOS
- Apple iPadOS
- Apple macOS
- Apple visionOS
- Apple tvOS
Why It Matters for Compliance & Audit Readiness
Improper memory isolation directly challenges access‑control and vendor‑management controls that auditors expect organizations to maintain. Demonstrating that you have:
- Continuous control monitoring – regular verification that devices run the latest patched OS versions.
- Defensible evidence – documented patch‑management logs, MDM policy snapshots, and verification of approved app inventories.
These artifacts satisfy audit expectations for due‑diligence under frameworks such as NIST CSF, ISO 27001, and industry‑specific regulations (e.g., HIPAA, PCI DSS) that require protection of data integrity and prevention of unauthorized code execution.
Recommended Actions
- Map the control – Align the vulnerability to your “Process Isolation & Access Controls” control set. Record the mapping in your risk register.
- Patch promptly – Deploy Apple’s security updates that address CVE‑2025‑43510 across all managed devices.
- Validate app vetting – Enforce strict MDM policies that restrict installation of unsigned or unvetted applications.
- Monitor for anomalous inter‑process activity – Enable endpoint detection and response (EDR) rules that flag unexpected memory‑access patterns.
- Capture evidence – Archive patch‑deployment logs, MDM configuration snapshots, and any EDR alerts as part of your audit trail.
Source: https://nvd.nist.gov/vuln/detail/CVE-2025-43510