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TI-2023-22951 Aliases CVE-2023-42866GHSA-2g4r-fqm7-xqfm

Apple Safari: Processing web content may lead to arbitrary code execution

Priority MEDIUM 41Published · Updated

Key facts

Attack vector
Network
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

The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, tvOS 16.6, Safari 16.6, watchOS 9.6. Processing web content may lead to arbitrary code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00764 55th percentileScored 2026-11-07
Fix Fixed Safari (Apple): 16.6tvOS (Apple): 16.6+3 more products

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
AppleSafaribefore 16.616.6Patch availableCNA
AppletvOSbefore 16.616.6Patch availableCNA
AppleiOS and iPadOSbefore 16.616.6Patch availableCNA
ApplemacOSbefore 13.513.5Patch availableCNA
ApplewatchOSbefore 9.69.6Patch availableCNA
  • Safari VendorApple Affected before 16.6 Fixed in 16.6 Patch available CNA
  • tvOS VendorApple Affected before 16.6 Fixed in 16.6 Patch available CNA
  • iOS and iPadOS VendorApple Affected before 16.6 Fixed in 16.6 Patch available CNA
  • macOS VendorApple Affected before 13.5 Fixed in 13.5 Patch available CNA
  • watchOS VendorApple Affected before 9.6 Fixed in 9.6 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 16.6VulnerableApple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 16.6VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 16.6VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 13.5VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 16.6VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 9.6VulnerableApple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 16.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 16.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 16.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 13.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 16.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 9.6 Vulnerable ·Apple

Remediation

  • Fix · CNA Safari (Apple) Fixed in 16.6
  • Fix · CNA tvOS (Apple) Fixed in 16.6
  • Fix · CNA iOS and iPadOS (Apple) Fixed in 16.6
  • Fix · CNA macOS (Apple) Fixed in 13.5
  • Fix · CNA watchOS (Apple) Fixed in 9.6

Fixed in the same release

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

  • Release ·

    Apple macOS 13.5

    7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2023-22917 Apple macOS: An app may be able to gain root privilegesPriority LOW 35
    • TI-2023-22921 Race condition in Apple macOSPriority LOW 32
    • TI-2023-22918 Information disclosure in Apple macOSPriority LOW 25
    Show all 7 records →
  • Release ·

    Apple iOS and iPadOS 16.6

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2023-21255 Apple iOS and iPadOS: An app may be able to read sensitive location informationPriority LOW 24
    • TI-2023-21257 Path traversal in Apple iOS and iPadOSPriority LOW 16
    • TI-2023-21213 Improper input validation in Apple iOS and iPadOSPriority LOW 15
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-42866
  2. 2026-10-03 Alias added: GHSA-2g4r-fqm7-xqfm

References

Advisory 5

  • 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