Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or corrupt kernel memory.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | iOS and iPadOS | < 26.4 | 26.4 |
| Apple | macOS | < 26.4 | 26.4 |
| Apple | tvOS | < 26.4 | 26.4 |
| Apple | visionOS | < 26.4 | 26.4 |
| Apple | watchOS | < 26.4 | 26.4 |
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.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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Somisomair/CVE-2026-20698-PF_ROUTE-Heap-Overflow ★ 6 · Mar 30, 2026
CVE-2026-20698: XNU kernel heap overflow via PF_ROUTE RTA_GENMASK. PoC and analysis. Independently discovered.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- WID-SEC-2026-0852 Apple iOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 8, 2026
- WID-SEC-2026-0853 Apple macOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 8, 2026
- NCSC-2026-0102 Kwetsbaarheden verholpen in Apple macOS NCSC-NL (Netherlands) · Mar 25, 2026
- NCSC-2026-0101 Kwetsbaarheden verholpen in Apple iOS en iPadOS NCSC-NL (Netherlands) · Mar 25, 2026