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CVE-2016-7583 Apple CVE debrief

CVE-2016-7583 describes a local privilege-escalation issue in Apple iCloud’s setup subsystem. According to the supplied NVD record, iCloud versions before 6.0.1 are affected, and a local user may gain privileges by placing or using a crafted dynamic library in an unspecified directory. Because the flaw requires local access but can result in full confidentiality, integrity, and availability impact, it is a serious patch-priority issue for systems still running vulnerable iCloud versions.

Vendor
Apple
Product
Icloud
CVSS
HIGH 7.8
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 users and administrators running iCloud versions earlier than 6.0.1, especially on shared workstations or systems where untrusted local accounts exist. Endpoint management teams should also care if they track installed Apple software versions across fleets.

Technical summary

The vulnerability is a local privilege escalation in the iCloud component’s setup subsystem. The NVD summary indicates that a crafted dynamic library can be used by a local user to gain privileges. The affected version range in the supplied data is iCloud through 6.0.0, with 6.0.1 and later not listed as vulnerable. NVD also maps the issue to CVSS 3.0 vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, consistent with a high-impact local attack.

Defensive priority

High. Although the attack requires local access, the privilege boundary crossed is significant and the potential impact is severe. Systems with older iCloud installations should be remediated promptly.

Recommended defensive actions

  • Update iCloud to 6.0.1 or later on affected Apple systems.
  • Audit endpoints for any installed iCloud versions earlier than 6.0.1.
  • Limit local account exposure on shared systems and remove unnecessary user access.
  • Prioritize remediation on systems that handle sensitive data or allow multiple interactive users.
  • Verify patch compliance through endpoint management or software inventory tooling.

Evidence notes

All claims are limited to the supplied CVE/NVD corpus and referenced official links. The NVD record states iCloud before 6.0.1 is affected, the issue involves the setup subsystem in the iCloud component, and a crafted dynamic library in an unspecified directory can allow local privilege escalation. The supplied data also includes CVSS 3.0 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H and no KEV entry.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-7583 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-7583

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2016-7583 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-7583

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.