CVE-2026-20700
KEVApple Multiple Buffer Overflow Vulnerability
7.8
HighPublished:
Last updated:
Source:product-security@apple.com
Analyzed
Weakness (CWE)
CVSS Vector
v3.1- Attack Vector
- Local
- Attack Complexity
- Low
- Privileges Required
- Low
- User Interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Description
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.
References
product-security@apple.com
https://support.apple.com/en-us/126346product-security@apple.com
https://support.apple.com/en-us/126348product-security@apple.com
https://support.apple.com/en-us/126351product-security@apple.com
https://support.apple.com/en-us/126352product-security@apple.com
https://support.apple.com/en-us/126353134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700