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TI-2026-76672 Aliases CVE-2026-84579GHSA-vc9j-vpcp-f8x2

Improper checks in Apple macOS lead to unexpected software execution

Priority MEDIUM 41CWE-703Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Apple macOS Sequoia before 15.8, macOS Tahoe before 26.7 and macOS Golden Gate before 27 are affected. Improper checks (CWE-703) may lead to unexpected software execution when a user opens a file that references a network share. The attack requires the user to open such a file.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Opening a file referencing a network share may lead to unexpected software execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00552 46th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 15.8, 26.7, 27

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApplemacOSbefore 15.8; before 26.7; before 2715.8, 26.7, 27Patch availableCNA
  • macOS VendorApple Affected before 15.8; before 26.7; before 27 Fixed in 15.8, 26.7, 27 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 15.8; 26.0 to before 26.7VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 15.8; 26.0 to before 26.7 Vulnerable ·Apple

Remediation

Apple fixes this in macOS Sequoia 15.8, macOS Tahoe 26.7 and macOS Golden Gate 27.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

  • Fix · CNA macOS (Apple) Fixed in 15.8, 26.7, 27

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apple macOS 15.8, 26.7, 27

    15 records Highest priority Priority MEDIUM 3 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2026-76675 Authentication issue in Apple macOS lets attackers impersonate usersPriority MEDIUM 48
    • TI-2026-76685 Stack overflow in Apple iOS, macOS and visionOS allows code executionPriority MEDIUM 40
    • TI-2026-76698 Out-of-bounds read in Apple operating systems can crash the systemPriority LOW 29
    Show all 15 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-84579
  2. 2026-10-21 CISA SSVC decision points changed
  3. 2026-11-02 CVSS score added · CISA ADP
  4. 2026-11-02 Weakness changed · CISA ADP
  5. 2026-11-02 CISA SSVC decision points changed
  6. 2026-11-02 Alias added: GHSA-vc9j-vpcp-f8x2
  7. 2026-11-04 Priority changed: LOW → MEDIUM

References

Advisory 3

  • TI-2026-46583 Improper authentication in Apple macOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
See all 3490 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences