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TI-2026-16755 Aliases CVE-2026-20700GHSA-j5x8-2r52-c3ff

Memory corruption in Apple iOS and iPadOS

Priority CRITICAL 93Exploited in the wildCWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker with memory write capability may be able to execute arbitrary code. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 and CVE-2025-43529 were also issued in response to this report.

Why it matters now

Exploitation Active In CISA KEV since 2026-02-12CISA due date 2026-03-05
EPSS 0.01654 76th percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 26.3macOS (Apple): 26.3+3 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
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
AppleiOS and iPadOSbefore 26.326.3Patch availableCNA
ApplemacOSbefore 26.326.3Patch availableCNA
AppletvOSbefore 26.326.3Patch availableCNA
ApplevisionOSbefore 26.326.3Patch availableCNA
ApplewatchOSbefore 26.326.3Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA
  • macOS VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA
  • tvOS VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA
  • visionOS VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA
  • watchOS VendorApple Affected before 26.3 Fixed in 26.3 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 26.3VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 26.3VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 26.3VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 26.3VulnerableApple
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*before 26.3VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 26.3VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 26.3 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 26.3
  • Fix · CNA macOS (Apple) Fixed in 26.3
  • Fix · CNA tvOS (Apple) Fixed in 26.3
  • Fix · CNA visionOS (Apple) Fixed in 26.3
  • Fix · CNA watchOS (Apple) Fixed in 26.3

Fixed in the same release

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

  • Release ·

    Apple visionOS 26.3

    26 records Highest priority Priority CRITICAL 1 CRITICAL, 4 MEDIUM, 21 LOW

    Other records, highest priority first

    • TI-2026-16733 Time-of-check time-of-use race condition in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2026-16673 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2026-16709 Uncontrolled resource consumption in Apple SafariPriority MEDIUM 40
    Show all 26 records →
  • Release ·

    Apple macOS 26.3

    21 records Highest priority Priority CRITICAL 1 CRITICAL, 2 MEDIUM, 18 LOW

    Other records, highest priority first

    • TI-2026-16709 Uncontrolled resource consumption in Apple SafariPriority MEDIUM 40
    • TI-2026-16707 Uncontrolled resource consumption in Apple iOS and iPadOSPriority MEDIUM 40
    • TI-2026-16715 Apple macOS: An app may be able to gain root privilegesPriority LOW 35
    Show all 21 records →
Show 3 more groups
  • Release ·

    Apple watchOS 26.3

    15 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-16707 Uncontrolled resource consumption in Apple iOS and iPadOSPriority MEDIUM 40
    • TI-2026-16723 Protection mechanism failure in Apple iOS and iPadOSPriority LOW 39
    • TI-2026-16731 Out-of-bounds read in Apple iOS and iPadOSPriority LOW 36
    Show all 15 records →
  • Release ·

    Apple iOS and iPadOS 26.3

    15 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-16707 Uncontrolled resource consumption in Apple iOS and iPadOSPriority MEDIUM 40
    • TI-2026-16723 Protection mechanism failure in Apple iOS and iPadOSPriority LOW 39
    • TI-2026-16683 Missing authorization in Apple iOS and iPadOSPriority LOW 35
    Show all 15 records →
  • Release ·

    Apple tvOS 26.3

    13 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 11 LOW

    Other records, highest priority first

    • TI-2026-16707 Uncontrolled resource consumption in Apple iOS and iPadOSPriority MEDIUM 40
    • TI-2026-16731 Out-of-bounds read in Apple iOS and iPadOSPriority LOW 36
    • TI-2026-16668 Out-of-bounds read in Apple iOS and iPadOSPriority LOW 36
    Show all 13 records →

Timeline

  1. 2026-02-12 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2026-20700
  3. 2026-10-03 Alias added: GHSA-j5x8-2r52-c3ff

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