What’s Vulnerable › Vulnerabilities

CVE-2026-43661

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-11 · updated 2026-10-26
• Weakness: CWE-121

Description

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.

Affected products

• Apple iPadOS: before 26.5 — fixed in 26.5
• Apple Iphone Os: before 26.5 — fixed in 26.5
• Apple macOS: from 26.0 before 26.5 — fixed in 26.5
• Apple tvOS: before 26.5 — fixed in 26.5
• Apple watchOS: before 26.5 — fixed in 26.5
• Apple iOS and iPadOS: before 18.7.10; before 26.5; before 26.7 — fixed in 18.7.10, 26.5, 26.7
• Apple macOS: before 14.8.8; before 15.7.8; before 26.5 — fixed in 14.8.8, 15.7.8, 26.5
• Apple tvOS: before 26.5 — fixed in 26.5
• Apple watchOS: before 26.5 — fixed in 26.5

How to fix

Upgrade to a fixed version: Apple iPadOS 26.5; Apple Iphone Os 26.5; Apple macOS 26.5; Apple tvOS 26.5; Apple watchOS 26.5; Apple iOS and iPadOS 18.7.10, 26.5, 26.7; Apple macOS 14.8.8, 15.7.8, 26.5; Apple tvOS 26.5; Apple watchOS 26.5. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/127110
• https://support.apple.com/en-us/127115
• https://support.apple.com/en-us/127118
• https://support.apple.com/en-us/127119
• https://support.apple.com/en-us/128071
• https://support.apple.com/en-us/128072
• https://support.apple.com/en-us/148287
• https://support.apple.com/en-us/149041

Get alerted when CVE-2026-43661 or the next vulnerability affects your stack