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CVE-2016-7599 Apple CVE debrief

CVE-2016-7599 is an Apple WebKit information-disclosure issue that was published on 2017-02-20. According to the NVD record, a crafted website using HTTP redirects could allow remote attackers to bypass the Same Origin Policy and obtain sensitive information. NVD marks the issue as medium severity with CVSS 6.5 and a network-reachable, user-interaction-required attack profile.

Vendor
Apple
Product
CVE-2016-7599
CVSS
MEDIUM 6.5
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

Organizations and individuals running affected Apple software, especially iOS, Safari, iCloud, and iTunes deployments that may still be on the vulnerable versions listed by NVD. Security teams should care because the weakness can expose sensitive browser-origin data rather than causing obvious service disruption.

Technical summary

The NVD record identifies the affected component as Apple WebKit and classifies the weakness as CWE-200. The CVSS vector is CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N, indicating remote exploitation with low complexity, no privileges required, and user interaction required. NVD's CPE criteria list vulnerable versions ending at iOS 10.1.1, Safari 10.0.1, iCloud 6.0.1, and iTunes 12.5.3. The record references Apple vendor advisories, but the supplied corpus does not include their full advisory text.

Defensive priority

Medium. The issue has meaningful confidentiality impact and is remotely triggerable, but it requires user interaction and does not indicate integrity or availability impact in the supplied CVSS data.

Recommended defensive actions

  • Update iOS to 10.2 or later, Safari to 10.0.2 or later, iCloud to 6.1 or later, and iTunes to 12.5.4 or later, consistent with the vulnerability description and NVD version criteria.
  • Prioritize remediation on systems that regularly browse untrusted web content or rely on browser-based authentication flows.
  • Review Apple vendor advisories and NVD references to confirm platform-specific update guidance for your environment.
  • If immediate patching is not possible, reduce exposure to untrusted websites and monitor for unexpected redirects in browser workflows.
  • Track the affected Apple software inventory so future browser/WebKit issues can be patched quickly.

Evidence notes

The evidence corpus contains the NVD CVE entry, which states the WebKit issue, the crafted-site-with-HTTP-redirects scenario, the CVSS vector, and the affected CPE version bounds. The corpus also lists Apple vendor advisories and third-party references, but their page contents are not included here, so this debrief avoids unsupported advisory-specific claims.

Official resources

Publicly disclosed via the CVE record on 2017-02-20. This debrief uses the CVE publication date from the supplied corpus and does not treat later modification dates as the issue date.