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TI-2026-80644 Aliases CVE-2026-112593GHSA-2jm4-rrhc-jcq5

Out-of-bounds write in Apple macOS lets local apps write kernel memory

Priority LOW 35CWE-787Published · Updated

Key facts

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

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

Summary

An out-of-bounds write flaw in Apple macOS lets a local app cause unexpected system termination or write kernel memory. The flaw is an out-of-bounds write (CWE-787) that bounds checking did not catch before the fix. An app with no privileges and no user interaction can trigger it on a local system.

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

Description from the CNA

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An app may be able to cause unexpected system termination or write kernel memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00183 7th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 15.8.2, 26.7.2

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 26.7.215.8.2, 26.7.2Patch availableCNA
  • macOS VendorApple Affected before 15.8.2; before 26.7.2 Fixed in 15.8.2, 26.7.2 Patch available CNA

CPE configurations NVD · 1

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

Remediation

Apple macOS Sequoia is fixed in version 15.8.2 and macOS Tahoe is fixed in version 26.7.2. Earlier versions of both branches are affected, so update to the fixed version for each.

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

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

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-80838 Out-of-bounds write in Apple iOS, iPadOS and macOS PDF processingPriority LOW 35
    • TI-2026-80839 Out-of-bounds write in Apple iOS, iPadOS and macOS PDF handlingPriority LOW 26
    • TI-2026-80819 Out-of-bounds read in Apple operating systems leaks process memoryPriority LOW 24
    Show all 4 records →

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-112593
  2. 2026-10-27 Alias added: GHSA-2jm4-rrhc-jcq5
  3. 2026-11-03 CVSS score added · CISA ADP
  4. 2026-11-03 Weakness changed · CISA ADP
  5. 2026-11-03 CISA SSVC decision points changed

References

Advisory 2

  • 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