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PatchSiren cyber security CVE debrief

CVE-2026-84569 Apple CVE debrief

An access issue was addressed with additional sandbox restrictions on the system pasteboards in macOS Golden Gate 27. This issue is fixed, but an app may have been able to access sensitive user data. The vulnerability affects macOS systems, specifically those not updated to Golden Gate 27 or later. Defenders should verify system updates and assess app access to sensitive data through system pasteboards. The CVE record and source item provide details on the access issue addressed in macOS Golden Gate 27.

Vendor
Apple
Product
macOS
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-14
Original CVE updated
2026-10-26
Advisory published
2026-09-14
Advisory updated
2026-10-26

Who should care

Defenders responsible for macOS systems and app security should verify if their systems are updated and assess app access to sensitive user data.

Why it matters

Defenders should prioritize verifying if their macOS versions are updated to Golden Gate 27 or later, and assess if apps have access to sensitive user data through system pasteboards.

  • Verify macOS updates to prevent potential access issues
  • Assess app access to sensitive user data through system pasteboards
  • Monitor system pasteboard access for suspicious activity

Technical summary

An access issue was addressed with additional sandbox restrictions on the system pasteboards in macOS Golden Gate 27. This issue is fixed, but an app may have been able to access sensitive user data. The vulnerability is related to the handling of system pasteboards, and defenders should prioritize verifying if their macOS versions are updated to Golden Gate 27 or later, and assess if apps have access to sensitive user data through system pasteboards.

Defensive priority

Defenders should prioritize verifying if their macOS versions are updated to Golden Gate 27 or later, and assess if apps have access to sensitive user data through system pasteboards.

Recommended defensive actions

  • Verify if macOS is updated to Golden Gate 27 or later
  • Assess if apps have access to sensitive user data through system pasteboards
  • Monitor system pasteboard access for suspicious activity

Evidence notes

The CVE record and source item provide details on the access issue addressed in macOS Golden Gate 27. The issue is related to additional sandbox restrictions on system pasteboards.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-84569 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-84569

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

  • CVE-2026-84569 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-84569

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

Supplemental references

  • CVE-2026-84569

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/84xxx/CVE-2026-84569.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://support.apple.com/en-us/149035

    Supplemental source

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.