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PatchSiren cyber security CVE debrief

CVE-2016-7638 Apple CVE debrief

CVE-2016-7638 is a medium-severity Apple iOS issue in the Find My iPhone component. According to the CVE description, iOS before 10.2 is affected and a physically proximate attacker can bypass authentication to disable Find My iPhone. The NVD record maps the vulnerable range to iOS versions up to 10.1.1 and assigns a CVSS 3.0 score of 4.6, reflecting an availability impact rather than confidentiality or integrity loss.

Vendor
Apple
Product
CVE-2016-7638
CVSS
MEDIUM 4.6
CISA KEV
Not listed in stored evidence
Original CVE published
2017-02-20
Original CVE updated
2026-05-13
Advisory published
2017-02-20
Advisory updated
2026-05-13

Who should care

iPhone and iPad users running affected iOS versions, especially organizations that rely on Find My iPhone for anti-theft protection, device recovery, or fleet management. Security teams should also care because the issue reduces the effectiveness of a core device-protection control.

Technical summary

The vulnerability affects the Find My iPhone component on iOS. The CVE description says a nearby attacker can bypass authentication and disable the feature on systems before iOS 10.2. NVD classifies the weakness as CWE-254 and gives the vector CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, indicating physical access/proximity and a high availability impact. The supplied records differ slightly on version scope: the description says before 10.2, while the NVD CPE criteria list vulnerable versions through 10.1.1.

Defensive priority

Medium. This is not a remote exploit and does not indicate data theft or code execution, but it can undermine a security-critical anti-theft and tracking feature on affected devices.

Recommended defensive actions

  • Upgrade affected Apple devices to a fixed iOS release at or above the vendor-patched version referenced in Apple's advisory.
  • Verify whether any managed or high-value devices are running iOS versions in the affected range.
  • Reinforce physical device security controls, since the attack requires physical proximity.
  • Review Apple’s security advisory and any internal fleet guidance for affected iOS versions.
  • If device tracking and recovery are important in your environment, confirm Find My iPhone remains enabled after updates and policy enforcement.

Evidence notes

This debrief is based on the supplied CVE description, NVD metadata, and the referenced Apple advisory. The official records state that iOS before 10.2 is affected, while the NVD CPE criteria narrow the vulnerable range to iOS versions up to 10.1.1. The CVSS vector and CWE classification are taken from the NVD entry.

Official resources

Publicly disclosed on 2017-02-20, based on the supplied CVE published date and the referenced Apple/NVD records.