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 iOS and macOS Out-of-Bounds Write Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.6.1 and iPadOS 15.6.1, macOS Monterey 12.5.1, Safari 15.6.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Affected products
apple: safari; apple: ipados; apple: iphone os; apple: macos; fedoraproject: fedora; debian: debian linux; webkitgtk: webkitgtk; wpewebkit: wpe webkit
References10
- support.apple.com/en-us/HT213412 Vendor Advisory
- support.apple.com/en-us/HT213413 Vendor Advisory
- support.apple.com/en-us/HT213414 Vendor Advisory
- support.apple.com/en-us/HT213412 Vendor Advisory
- support.apple.com/en-us/HT213413 Vendor Advisory
- support.apple.com/en-us/HT213414 Vendor Advisory
- seclists.org/fulldisclosure/2022/Aug/16 Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2022/Oct/49 Mailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2022/08/25/5 Mailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2022/08/26/2 Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 10% percentile: 96 · as of 2 November 2026
- CWE
- CWE-787