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TI-2026-80707 Aliases CVE-2026-86877GHSA-wxh9-4m39-q777

Path traversal in Apple macOS lets malicious apps delete files

Priority LOW 27CWE-22Published · Updated

Key facts

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

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

Summary

Apple macOS versions before 27 contain a path traversal flaw (CWE-22) in file path validation. A malicious app running locally can delete files for which it does not have privileges.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

A path traversal issue was addressed with improved path validation. This issue is fixed in macOS Golden Gate 27. A malicious app may be able to delete files for which it does not have privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00156 4th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 27

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 2727Patch availableCNA
  • macOS VendorApple Affected before 27 Fixed in 27 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 27.0VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple

Remediation

Apple fixes this in macOS 27. Update Apple macOS to version 27 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA macOS (Apple) Fixed in 27

Fixed in the same release

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

  • Release ·

    Apple macOS 27

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-80596 Path traversal in Apple macOS lets apps break out of sandboxPriority MEDIUM 40
    • TI-2026-80706 Race condition in Apple iOS, macOS and visionOS lets apps write kernel memoryPriority LOW 29
    • TI-2026-80836 Out-of-bounds read in Apple operating systems leaks process memoryPriority LOW 20
    Show all 4 records →

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-86877
  2. 2026-10-27 Alias added: GHSA-wxh9-4m39-q777
  3. 2026-11-04 CVSS score added · CISA ADP
  4. 2026-11-04 Weakness changed · CISA ADP
  5. 2026-11-04 CISA SSVC decision points changed

References

Advisory 1

  • 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