# 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.

- Web page: https://patchblox.com/security/cve/CVE-2026-20700
- Priority: Patch now
- CVSS: 7.8 (HIGH)
- EPSS: 0.0165
- CISA KEV: listed Feb 12, 2026, federal due date Mar 5, 2026
- Exploited (vendor report): yes
- Publicly disclosed: no
- Published: Feb 11, 2026
- Vendor advisory: https://support.apple.com/en-us/126348

## Description

A memory corruption issue was addressed with improved state management.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| macOS | Tahoe | 26.3 | [Tahoe 26.3](https://patchblox.com/security/data/fix/macos/tahoe-26.3.md) | Feb 11, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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