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Out-of-bounds read in Apple macOS lets apps crash the system

Priority LOW 24CWE-125Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

Apple macOS versions before 27.2 are affected. An out-of-bounds read (CWE-125) lets code read memory outside the bounds of a buffer. A local app with no privileges can cause unexpected system termination, but user interaction is required.

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

Description from the CNA

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27.2. An app may be able to cause unexpected system termination.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00128 2nd percentileScored 2026-11-07
Fix Fixed macOS (Apple): 27.2

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 27.227.2Patch availableCNA
  • macOS VendorApple Affected before 27.2 Fixed in 27.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*27.0 to before 27.2VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 27.0 to before 27.2 Vulnerable ·Apple

Remediation

Upgrade to macOS 27.2, which fixes this issue.

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

  • Fix · CNA macOS (Apple) Fixed in 27.2

Fixed in the same release

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

  • Release ·

    Apple macOS 27.2

    78 records Highest priority Priority MEDIUM 23 MEDIUM, 55 LOW

    Other records, highest priority first

    • TI-2026-80671 Sandbox escape in Apple Safari and other Apple platformsPriority MEDIUM 50
    • TI-2026-80835 Out-of-bounds read in Apple iOS, iPadOS and macOS may leak memoryPriority MEDIUM 42
    • TI-2026-80618 Memory corruption in Apple platforms via crafted video filePriority MEDIUM 42

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-113937
  2. 2026-10-27 Alias added: GHSA-2mjp-w759-g5fx
  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

  • 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