Type Confusion Vulnerability (CVE‑2020‑27932) Affects Apple iOS, iPadOS, macOS, watchOS – Kernel Privilege‑Escalation Risk
What It Is — Apple’s iOS, iPadOS, macOS and watchOS contain a type‑confusion flaw that can be triggered by a malicious application to execute arbitrary code with kernel‑level privileges. The defect originates from improper validation of object types inside the kernel’s memory‑management path.
Exploitability — Publicly disclosed in 2020; proof‑of‑concept code is available. Apple issued patches (iOS 14.2, macOS 11.0.1, watchOS 7.2, etc.). CVSS v3.1 base score 7.8 (HIGH). No confirmed active‑exploitation campaigns, but any unpatched device remains at risk.
Affected Products — All Apple devices running iOS, iPadOS, macOS or watchOS versions prior to the respective security updates.
Why It Matters for Trust & Control Assurance
- Highlights the necessity of continuous control mapping: privilege‑escalation controls must be tied to verifiable evidence that endpoints are patched.
- A successful exploit defeats OS‑level access‑control guarantees, undermining the “least‑privilege” assurance auditors look for.
- Demonstrates that maintaining up‑to‑date firmware is a measurable control artifact across frameworks (e.g., NIST CSF Protect‑PR.AC‑4), supporting audit readiness and defensible evidence.
Recommended Actions
- Deploy Apple’s security updates immediately on all managed devices.
- Verify patch status with an endpoint‑inventory tool and capture screenshots or logs as audit evidence.
- Map the “privilege‑escalation” control to your framework of record and record remediation evidence in a continuous‑monitoring repository.
- Review and tighten app‑installation policies; consider restricting sideloaded apps to reduce exposure.
Source: CISA KEV – CVE‑2020‑27932