CVE-2026-20700
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.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Feb 12, 2026
- US federal agencies must remediate it by Mar 5, 2026 (BOD 22-01)
- Attacked 1 day before the vulnerability was made public
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Source: CISA KEV · Sep 8, 2026 Apr 19, 2026 Mar 18, 2026 Mar 18, 2026 Mar 12, 2026 Feb 12, 2026
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected products
| Vendors | Product | Versions |
|---|---|---|
| apple | ipados | < 26.3 |
| apple | iphone os | < 26.3 |
| apple | macos | < 26.3 |
| apple | tvos | < 26.3 |
| apple | visionos | < 26.3 |
| apple | watchos | < 26.3 |
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This product uses the NVD API but is not endorsed or certified by the NVD.