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TI-2026-23045 Aliases CVE-2026-28856GHSA-9chh-mhfr-3v8v

Improper access control in Apple iOS and iPadOS

Priority LOW 21CWE-284Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
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-284.

Summary

The issue was addressed with improved authentication. This issue is fixed in iOS 26.4 and iPadOS 26.4, visionOS 26.4, watchOS 26.4. An attacker with physical access to a locked device may be able to view sensitive user information.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00287 21st percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 26.4visionOS (Apple): 26.4+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 26.426.4Patch availableCNA
ApplevisionOSbefore 26.426.4Patch availableCNA
ApplewatchOSbefore 26.426.4Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 26.4 Fixed in 26.4 Patch available CNA
  • visionOS VendorApple Affected before 26.4 Fixed in 26.4 Patch available CNA
  • watchOS VendorApple Affected before 26.4 Fixed in 26.4 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 26.4VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 26.4VulnerableApple
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*before 26.4VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 26.4VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 26.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 26.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 26.4 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 26.4
  • Fix · CNA visionOS (Apple) Fixed in 26.4
  • Fix · CNA watchOS (Apple) Fixed in 26.4

Fixed in the same release

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

  • Release ·

    Apple visionOS 26.4

    27 records Highest priority Priority MEDIUM 1 MEDIUM, 26 LOW

    Other records, highest priority first

    • TI-2026-16744 Path traversal in Apple iOS and iPadOSPriority MEDIUM 42
    • TI-2026-23066 Information disclosure in Apple iOS and iPadOSPriority LOW 37
    • TI-2026-23068 Improper access control in Apple iOS and iPadOSPriority LOW 36
    Show all 27 records →
  • Release ·

    Apple watchOS 26.4

    20 records Highest priority Priority LOW 20 LOW

    Other records, highest priority first

    • TI-2026-23066 Information disclosure in Apple iOS and iPadOSPriority LOW 37
    • TI-2026-16721 Protection mechanism failure in Apple SafariPriority LOW 36
    • TI-2026-23054 Improper authorization in Apple iOS and iPadOSPriority LOW 34
    Show all 20 records →
Show 1 more group
  • Release ·

    Apple iOS and iPadOS 26.4

    16 records Highest priority Priority MEDIUM 3 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-23047 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
    • TI-2026-16744 Path traversal in Apple iOS and iPadOSPriority MEDIUM 42
    • TI-2026-23079 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 40
    Show all 16 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-28856
  2. 2026-10-03 Alias added: GHSA-9chh-mhfr-3v8v

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