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PatchSiren cyber security CVE debrief

CVE-2016-4692 Apple CVE debrief

CVE-2016-4692 is a high-severity Apple WebKit memory-corruption issue that could be triggered by a crafted website. In affected products, a remote attacker could potentially execute arbitrary code or cause a denial of service through an application crash. The CVE record was published on 2017-02-20, and the NVD entry lists Apple-linked advisories and affected version ranges for iOS, Safari, iCloud, and iTunes.

Vendor
Apple
Product
CVE-2016-4692
CVSS
HIGH 8.8
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

Apple device and application administrators, enterprise mobility teams, browser/security engineers, and end users running affected iOS, Safari, iCloud, or iTunes versions should treat this as a priority patch item. Teams responsible for WebKit-based browsing exposure should also review deployment status.

Technical summary

NVD classifies the weakness as CWE-119 and assigns CVSS 3.0 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). The issue is in WebKit and is reachable via a crafted web site, meaning the attack surface is client-side and depends on user interaction. The impact includes memory corruption, possible arbitrary code execution, and application crash/denial of service. The NVD record notes affected Apple products and version ranges across iOS, Safari, iCloud, and iTunes.

Defensive priority

High — prioritize patching affected Apple clients and browser-facing surfaces.

Recommended defensive actions

  • Update iOS to 10.2 or later on affected devices.
  • Update Safari to 10.0.2 or later on affected systems.
  • Update iCloud to 6.1 or later where applicable.
  • Update iTunes to 12.5.4 or later where applicable.
  • Verify fleet inventory for Apple products that include WebKit exposure and confirm patched versions are deployed.
  • Until remediation is complete, reduce exposure to untrusted web content on affected systems and monitor for crashes or instability in browser-facing applications.

Evidence notes

All substantive claims here come from the supplied NVD record and its referenced Apple-linked advisories. The NVD description states iOS before 10.2, Safari before 10.0.2, iCloud before 6.1, and iTunes before 12.5.4; the CPE criteria in the same record enumerate end versions of 10.1.1, 10.0.1, 6.0.1, and 12.5.3 respectively. That version-range mismatch is noted in the evidence rather than resolved here. NVD also lists CVSS 8.8 high and CWE-119.

Official resources

Public CVE publication date in the supplied record is 2017-02-20. The later NVD modified date (2026-05-13) reflects record maintenance and should not be treated as the issue date.