CVE-2026-20621
An app may be able to cause unexpected system termination or corrupt kernel memory.
Does this matter?
Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own.
Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.15% probability · 4th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- apple/ipados · apple/iphone os · apple/macos
- Source
- product-security@apple.com
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://support.apple.com/en-us/126346Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126347Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126348Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126349Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126350Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126353Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.