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TI-2023-21205 Aliases CVE-2023-40385GHSA-42hw-x9jg-7942

Information disclosure in Apple iOS and iPadOS

Priority LOW 30CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200.

Summary

This issue was addressed by removing the vulnerable code. This issue is fixed in macOS Sonoma 14, Safari 17, iOS 17 and iPadOS 17. A remote attacker may be able to view leaked DNS queries with Private Relay turned on.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00774 55th percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 17Safari (Apple): 17+1 more product

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
AppleiOS and iPadOSbefore 1717Patch availableCNA
AppleSafaribefore 1717Patch availableCNA
ApplemacOSbefore 1414Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 17 Fixed in 17 Patch available CNA
  • Safari VendorApple Affected before 17 Fixed in 17 Patch available CNA
  • macOS VendorApple Affected before 14 Fixed in 14 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 17.0VulnerableApple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 17.0VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 17.0VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 14.0VulnerableApple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 17.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 17.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 17.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 14.0 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 17
  • Fix · CNA Safari (Apple) Fixed in 17
  • Fix · CNA macOS (Apple) Fixed in 14

Fixed in the same release

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

  • Release ·

    Apple macOS 14

    21 records Highest priority Priority MEDIUM 4 MEDIUM, 17 LOW

    Other records, highest priority first

    • TI-2023-21685 Type confusion in Apple iOS and iPadOSPriority MEDIUM 49
    • TI-2023-21233 Use after free in Apple iOS and iPadOSPriority MEDIUM 45
    • TI-2023-22922 Code injection in Apple iOS and iPadOSPriority MEDIUM 42
    Show all 21 records →
  • Release ·

    Apple iOS and iPadOS 17

    14 records Highest priority Priority CRITICAL 1 CRITICAL, 4 MEDIUM, 9 LOW

    Other records, highest priority first

    • TI-2023-22357 Use after free in Apple iOS and iPadOSPriority CRITICAL 93
    • TI-2023-21685 Type confusion in Apple iOS and iPadOSPriority MEDIUM 49
    • TI-2023-21233 Use after free in Apple iOS and iPadOSPriority MEDIUM 45
    Show all 14 records →
Show 1 more group
  • Release ·

    Apple Safari 17

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2023-21233 Use after free in Apple iOS and iPadOSPriority MEDIUM 45
    • TI-2023-22922 Code injection in Apple iOS and iPadOSPriority MEDIUM 42
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-40385
  2. 2026-10-03 Alias added: GHSA-42hw-x9jg-7942

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