TI-2026-31751 Aliases CVE-2026-43655 GHSA-6wgp-q874-jmmx

Out-of-bounds read in Apple iOS and iPadOS

LOW 32CWE-125Published 2026-05-11 · Updated 2026-05-12

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Low · Low · Low
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 bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. An app may be able to cause unexpected system termination or read kernel memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00365 30th percentileScored 2026-11-07

Fix Fixed iOS and iPadOS (Apple): 26.5macOS (Apple): 26.5+2 more products

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

Vendor	Product	Affected versions	Fixed in	Status	Source
Apple	iOS and iPadOS	before 26.5	26.5	Patch available	CNA
Apple	macOS	before 26.5	26.5	Patch available	CNA
Apple	tvOS	before 26.5	26.5	Patch available	CNA
Apple	watchOS	before 26.5	26.5	Patch available	CNA

iOS and iPadOS VendorApple Affected before 26.5 Fixed in 26.5 Patch available CNA
macOS VendorApple Affected before 26.5 Fixed in 26.5 Patch available CNA
tvOS VendorApple Affected before 26.5 Fixed in 26.5 Patch available CNA
watchOS VendorApple Affected before 26.5 Fixed in 26.5 Patch available CNA

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:ipados::::::::	before 26.5	Vulnerable	Apple
cpe:2.3:o:apple:iphone_os::::::::	before 26.5	Vulnerable	Apple
cpe:2.3:o:apple:macos::::::::	26.0 to before 26.5	Vulnerable	Apple
cpe:2.3:o:apple:tvos::::::::	before 26.5	Vulnerable	Apple
cpe:2.3:o:apple:watchos::::::::	before 26.5	Vulnerable	Apple

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 26.5 Vulnerable ·Apple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.5 Vulnerable ·Apple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 26.0 to before 26.5 Vulnerable ·Apple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 26.5 Vulnerable ·Apple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 26.5 Vulnerable ·Apple

Remediation

Fix · CNA iOS and iPadOS (Apple) Fixed in 26.5
Fix · CNA macOS (Apple) Fixed in 26.5
Fix · CNA tvOS (Apple) Fixed in 26.5
Fix · CNA watchOS (Apple) Fixed in 26.5

Fixed in the same release

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

Release · 2026-05-11
Apple tvOS 26.5
44 records Highest priority Priority MEDIUM 6 MEDIUM, 38 LOW
Other records, highest priority first
- TI-2026-23134 Memory corruption in Apple SafariPriority MEDIUM 41
- TI-2026-23121 Memory corruption in Apple iOS and iPadOSPriority MEDIUM 41
- TI-2026-23040 Memory corruption in Apple SafariPriority MEDIUM 41
Show all 44 records →
Release · 2026-05-11
Apple watchOS 26.5
41 records Highest priority Priority MEDIUM 5 MEDIUM, 36 LOW
Other records, highest priority first
- TI-2026-23134 Memory corruption in Apple SafariPriority MEDIUM 41
- TI-2026-23040 Memory corruption in Apple SafariPriority MEDIUM 41
- TI-2026-23159 Type confusion in Apple iOS and iPadOSPriority MEDIUM 40
Show all 41 records →

Show 2 more groups

Release · 2026-05-11
Apple macOS 26.5
27 records Highest priority Priority MEDIUM 3 MEDIUM, 24 LOW
Other records, highest priority first
- TI-2026-23134 Memory corruption in Apple SafariPriority MEDIUM 41
- TI-2026-23040 Memory corruption in Apple SafariPriority MEDIUM 41
- TI-2026-23128 Use after free in Apple SafariPriority MEDIUM 40
Show all 27 records →
Release · 2026-05-11
Apple iOS and iPadOS 26.5
18 records Highest priority Priority LOW 18 LOW
Other records, highest priority first
- TI-2026-23152 Improper access control in Apple iOS and iPadOSPriority LOW 39
- TI-2026-23144 Improper access control in Apple iOS and iPadOSPriority LOW 39
- TI-2026-23143 Apple iOS and iPadOS: An app may be able to access sensitive user dataPriority LOW 39
Show all 18 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-43655
2026-10-03 Alias added: GHSA-6wgp-q874-jmmx

References

Advisory 4

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