PatchSiren cyber security CVE debrief
CVE-2016-4613 Apple CVE debrief
CVE-2016-4613 is a medium-severity Apple WebKit information-disclosure issue affecting multiple Apple products. According to the NVD record, a remote attacker could use a crafted website to obtain sensitive information from affected installations. The vulnerability is listed for Safari, iCloud, iTunes, and tvOS/Apple TV versions prior to the fixed releases noted in the CVE data.
- Vendor
- Apple
- Product
- CVE-2016-4613
- 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 versions, especially environments that rely on Safari or Apple media/cloud applications and where users may browse untrusted websites. Security teams managing Apple endpoints should prioritize patch verification for the specific version ranges listed in the CVE record.
Technical summary
The NVD entry classifies the issue as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) with CVSS v3.0 vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. The vulnerable products and version ranges listed in the supplied corpus are Safari through 10.0.0, iCloud through 6.0.0, iTunes through 12.5.1, and Apple TV 10.0.0/tvOS 10.0.0. The available source material does not include the Apple advisory text itself, so the debrief is limited to the NVD/CVE record and reference listings.
Defensive priority
Medium. The issue requires user interaction and is limited to confidentiality impact, but it affects widely used Apple client software and is triggered through web content, so patching should still be treated as important for exposed endpoints.
Recommended defensive actions
- Upgrade Safari to 10.0.1 or later on affected systems.
- Upgrade iCloud to 6.0.1 or later where applicable.
- Upgrade iTunes to 12.5.2 or later where applicable.
- Upgrade tvOS/Apple TV to 10.0.1 or later.
- Verify fleet inventory for the affected version ranges listed in the NVD CPE criteria before and after remediation.
- Treat this as a confidentiality-focused issue and review endpoint exposure to untrusted web content until remediation is confirmed.
Evidence notes
All claims here are drawn from the supplied CVE/NVD corpus: the CVE description states the issue affects Apple products via the WebKit component and a crafted website can disclose sensitive information; the NVD metadata supplies the affected CPE version ranges, CVSS vector, and CWE-200 classification. The source corpus references Apple support advisories and third-party listings, but their contents were not included, so no additional advisory-specific claims are made.
Official resources
CVE published 2017-02-20 and last modified 2026-05-13 per the supplied CVE/NVD timeline. No KEV entry was provided in the corpus.