Apple macOS/watchOS/visionOS/iOS/iPadOS/tvOS up to 26.2 memory corruption

Summaryinfo

A vulnerability was found in Apple macOS, watchOS, visionOS, iOS, iPadOS and tvOS up to 26.2. It has been classified as critical. Affected by this issue is some unknown functionality. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2026-20700. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple macOS, watchOS, visionOS, iOS, iPadOS and tvOS up to 26.2. This issue affects an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2026-20700 since 11/11/2025. The exploitation is known to be easy. Technical details are unknown but an exploit is available. The price for an exploit might be around USD $25k-$100k at the moment (estimation calculated on 03/26/2026).

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 02/12/2026 with a due date of 03/05/2026:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading to version 26.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (1075). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Smartwatch Operating System

Vendor

• Apple

Name

• iOS
• iPadOS
• macOS
• tvOS
• visionOS
• watchOS

Version

• 26.0
• 26.1
• 26.2

License

• commercial

Website

• Vendor: https://www.apple.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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