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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | iOS and iPadOS | < 26.3 | 26.3 |
| Apple | macOS | < 26.3 | 26.3 |
| Apple | tvOS | < 26.3 | 26.3 |
| Apple | visionOS | < 26.3 | 26.3 |
| Apple | watchOS | < 26.3 | 26.3 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 2 repositories
-
R3n3r0/CVE-2026-20700 ★ 19 · May 23, 2026
-
notthemystery/CVE-2026-20700-POC-that-ll-never-work ★ 0 · May 25, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- WID-SEC-2026-0403 Apple macOS Tahoe, Sequoia und Sonoma: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 8, 2026
- WID-SEC-2026-0402 Apple iOS und iPadOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 24, 2026
- NCSC-2026-0064 Kwetsbaarheden verholpen in Apple iOS en iPadOS NCSC-NL (Netherlands) · Feb 13, 2026
- NCSC-2026-0063 Kwetsbaarheden verholpen in Apple macOS NCSC-NL (Netherlands) · Feb 13, 2026