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PatchSiren cyber security CVE debrief

CVE-2016-7586 Apple CVE debrief

CVE-2016-7586 is a medium-severity Apple WebKit information-disclosure issue. The CVE description says a remote attacker can obtain sensitive information by directing a user to a crafted website. The supplied NVD metadata rates it CVSS 6.5 with network attack, low complexity, no privileges required, and user interaction required, which makes it more of a targeted confidentiality risk than a full compromise issue.

Vendor
Apple
Product
CVE-2016-7586
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

Apple users and administrators responsible for affected iOS, Safari, iCloud, or iTunes deployments, especially systems where users routinely browse untrusted web content.

Technical summary

The supplied record identifies CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). NVD lists the attack vector as network, with low complexity, no privileges required, and user interaction required (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N). The issue is tied to WebKit and is described as information disclosure via a crafted website.

Defensive priority

Medium. Patch promptly because the issue is remotely reachable, confidentiality-impacting, and requires only user interaction. Prioritize internet-facing or heavily used user devices first.

Recommended defensive actions

  • Update to the fixed versions named in the CVE description: iOS 10.2 or later, Safari 10.0.2 or later, iCloud 6.1 or later, and iTunes 12.5.4 or later.
  • Verify fleet exposure by checking installed Apple software versions against the affected ranges in the CVE record and NVD CPE criteria.
  • Treat links from untrusted sites cautiously until all affected endpoints are updated, because exploitation depends on user interaction with a crafted website.
  • Use the linked Apple vendor advisories and the NVD record to confirm remediation guidance for your specific product mix.

Evidence notes

Evidence in the supplied corpus supports an information-disclosure finding: the CVE description says the issue allows remote attackers to obtain sensitive information via a crafted website, and NVD maps the weakness to CWE-200. NVD also supplies the CVSS vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. The record references Apple vendor advisories HT207421, HT207422, HT207424, and HT207427, but the advisory page contents are not included in the supplied corpus. The supplied description states affected versions as iOS before 10.2, Safari before 10.0.2, iCloud before 6.1, and iTunes before 12.5.4, while the NVD CPE criteria in the provided source item end at 10.1.1, 10.0.1, 6.0.1, and 12.5.3; that versioning mismatch is noted as a corpus consistency issue.

Official resources

Publicly disclosed in the CVE record on 2017-02-20. The NVD record was later modified on 2026-05-13, which is record maintenance timing rather than the original issue date. No KEV listing is present in the supplied timeline.