CVE-2026-20700

dyld: 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.

CVE-2026-20700 is fixed in Tahoe on 1 platform by Tahoe 26.3 (version 26.3), released February 11, 2026. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on February 12, 2026. Patch Radar priority: Patch now.

Patch nowCISA KEV

CVSS

7.8

HIGH

Exploitation

Exploited

Reported by the vendor

CISA KEV

Feb 12, 2026

Federal due date Mar 5, 2026

EPSS

0.0165

76th percentile

A memory corruption issue was addressed with improved state management.

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Tahoe	26.3	Tahoe 26.3	Feb 11, 2026

Details

Published
February 11, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor advisory
https://support.apple.com/en-us/126348

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