CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Apple macOS Out-of-Bounds Read Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Monterey 12.3.1, Security Update 2022-004 Catalina, macOS Big Sur 11.6.6. A local user may be able to read kernel memory.
Affected products
apple: mac os x; apple: macos
References7
- support.apple.com/en-us/HT213220 Release NotesVendor Advisory
- support.apple.com/en-us/HT213255 Release NotesVendor Advisory
- support.apple.com/en-us/HT213256 Release NotesVendor Advisory
- support.apple.com/en-us/HT213220 Release NotesVendor Advisory
- support.apple.com/en-us/HT213255 Release NotesVendor Advisory
- support.apple.com/en-us/HT213256 Release NotesVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=… Third Party AdvisoryUS Government Resource
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 1% percentile: 65 · as of 2 November 2026
- CWE
- CWE-125