CVE-2016-7637 Apple CVE debrief

Who should care

Administrators and security teams managing Apple devices, especially fleets that still include older iOS, macOS, or watchOS versions. Endpoint teams should treat this as a local-attack-path vulnerability with high impact on confidentiality, integrity, and availability.

Technical summary

The NVD record maps this issue to CWE-119 (improper restriction of operations within the bounds of a memory buffer) and the CVSS vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. In practical terms, the flaw is a Kernel memory corruption condition reachable by a local user. The supplied record describes potential privilege escalation or denial of service. The record also includes Apple vendor advisories and third-party references, but no exploit details are needed to understand the risk.

Defensive priority

High for any environment with exposed local-user attack paths or devices that may not yet be on the fixed Apple releases. The combination of kernel impact and high CVSS impact warrants prompt patch verification and version compliance checks.

Recommended defensive actions

• Confirm all Apple devices are updated to the fixed releases referenced by the CVE record: iOS 10.2 or later, macOS 10.12.2 or later, and watchOS 3.1.3 or later.
• Inventory older Apple OS versions and prioritize endpoints that remain below the fixed thresholds.
• Review local-account exposure on shared or multi-user systems, since the attack vector is local and requires privileges.
• Validate patch deployment using device management or version-reporting tooling rather than relying only on user self-reporting.
• Monitor Apple security advisory references and third-party vulnerability tracking for any clarification on affected versions.
• If remediation cannot be immediate, reduce local interactive access where feasible and limit untrusted code execution on impacted systems.

Evidence notes

The CVE description states that iOS before 10.2, macOS before 10.12.2, and watchOS before 3.1.3 are affected. The NVD record also provides CPE criteria that list end versions of iOS 10.1.1, macOS 10.12.1, and watchOS 2.2.2, which do not exactly match the prose description; this debrief preserves that discrepancy rather than resolving it. The record classifies the weakness as CWE-119 and lists Apple vendor advisories plus third-party references.

Official resources