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TI-2026-80594 Aliases CVE-2026-84604GHSA-m9hv-8q92-9g3h

Stack buffer overflow in Apple macOS audit file processing

Priority LOW 35CWE-121Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Apple macOS versions before 15.8.2, before 26.7.2 and before 27 are affected. A stack-based buffer overflow (CWE-121) lets processing a maliciously crafted audit file corrupt process memory. A local attacker with no privileges needs a user to process the crafted file.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

A stack buffer overflow was addressed through improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted audit file may corrupt process memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00207 10th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 15.8.2, 26.7.2, 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 15.8.2; before 26.7.2; before 2715.8.2, 26.7.2, 27Patch availableCNA
  • macOS VendorApple Affected before 15.8.2; before 26.7.2; before 27 Fixed in 15.8.2, 26.7.2, 27 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*15.0 to before 15.8.2; 26.0 to before 26.7.2VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 15.0 to before 15.8.2; 26.0 to before 26.7.2 Vulnerable ·Apple

Remediation

Apple fixes this in macOS Sequoia 15.8.2, macOS Tahoe 26.7.2 and macOS Golden Gate 27.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA macOS (Apple) Fixed in 15.8.2, 26.7.2, 27

Fixed in the same release

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

  • Release ·

    Apple macOS 15.8.2, 26.7.2, 27

    20 records Highest priority Priority MEDIUM 1 MEDIUM, 19 LOW

    Other records, highest priority first

    • TI-2026-80711 Out-of-bounds write in Apple macOS lets crafted files run codePriority MEDIUM 41
    • TI-2026-80701 Use after free in Apple macOS allows sandbox escape to rootPriority LOW 39
    • TI-2026-80688 Apple iOS, iPadOS and macOS flaw lets apps break out of sandboxPriority LOW 38
    Show all 20 records →

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-84604
  2. 2026-10-27 Alias added: GHSA-m9hv-8q92-9g3h
  3. 2026-11-02 CVSS score added · NVD
  4. 2026-11-02 Weakness changed · NVD
  5. 2026-11-03 CVSS score added · CISA ADP
  6. 2026-11-03 Weakness changed · CISA ADP
  7. 2026-11-03 CISA SSVC decision points changed

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