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TI-2023-12539 Aliases CVE-2023-27949GHSA-jwhc-74h7-9587

Out-of-bounds read in Apple macOS

Priority LOW 36CWE-125Published · Updated

Key facts

Attack vector
Local
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

An out-of-bounds read was addressed with improved input validation. This issue is fixed in macOS Ventura 13.3, macOS Monterey 12.6.4, iOS 15.7.4 and iPadOS 15.7.4. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00251 16th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 13.3, 12.6iOS and iPadOS (Apple): 15.7

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 13.313.3Patch availableCNA
ApplemacOSbefore 12.612.6Patch availableCNA
AppleiOS and iPadOSbefore 15.715.7Patch availableCNA
  • macOS VendorApple Affected before 13.3 Fixed in 13.3 Patch available CNA
  • macOS VendorApple Affected before 12.6 Fixed in 12.6 Patch available CNA
  • iOS and iPadOS VendorApple Affected before 15.7 Fixed in 15.7 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 15.7.4VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 15.7.4VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*12.0 to before 12.6.4; 13.0 to before 13.3VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 15.7.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 15.7.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 12.0 to before 12.6.4; 13.0 to before 13.3 Vulnerable ·Apple

Remediation

  • Fix · CNA macOS (Apple) Fixed in 13.3
  • Fix · CNA macOS (Apple) Fixed in 12.6
  • Fix · CNA iOS and iPadOS (Apple) Fixed in 15.7

Fixed in the same release

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

  • Release ·

    Apple macOS 13.3

    52 records Highest priority Priority MEDIUM 8 MEDIUM, 44 LOW

    Other records, highest priority first

    • TI-2023-12543 Out-of-bounds write in Apple macOSPriority MEDIUM 52
    • TI-2023-12765 Race condition in Apple macOSPriority MEDIUM 51
    • TI-2023-09358 Apple macOS: A file from an iCloud shared-by-me folder may be able to bypass GatekeeperPriority MEDIUM 50
    Show all 52 records →
  • Release ·

    Apple macOS 12.6

    32 records Highest priority Priority MEDIUM 5 MEDIUM, 27 LOW

    Other records, highest priority first

    • TI-2023-12543 Out-of-bounds write in Apple macOSPriority MEDIUM 52
    • TI-2023-12548 Resource allocation without limits in Apple macOSPriority MEDIUM 49
    • TI-2023-12525 Buffer overflow in Apple macOSPriority MEDIUM 44
    Show all 32 records →
Show 1 more group
  • Release ·

    Apple iOS and iPadOS 15.7

    21 records Highest priority Priority MEDIUM 3 MEDIUM, 18 LOW

    Other records, highest priority first

    • TI-2023-12765 Race condition in Apple macOSPriority MEDIUM 51
    • TI-2023-12553 Missing authorization in Apple macOSPriority MEDIUM 40
    • TI-2023-09364 Apple macOS: An app may be able to break out of its sandboxPriority MEDIUM 40
    Show all 21 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-27949
  2. 2026-10-03 Alias added: GHSA-jwhc-74h7-9587

References

Advisory 3

  • 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
  • TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
See all 2382 →

Sources

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