A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An app may be able to cause unexpected system termination.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Public exploits 2
- 0xjohnnydev/CVE-2026-20637-AppleSEPKeyStore-UAF PoC on GitHub
- enfilade-labs/CVE-2026-20637-AppleSEPKeyStore-UAF PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Change history 1
- First seenunscored · appleNVD modified 2026-10-26 20:38
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://support.apple.com/en-us/126346
- https://support.apple.com/en-us/126348
- https://support.apple.com/en-us/126351
- https://support.apple.com/en-us/126352
- https://support.apple.com/en-us/126353
- https://support.apple.com/en-us/126793
- https://support.apple.com/en-us/126795
- https://support.apple.com/en-us/126796