Out-of-Bounds Write Vulnerability in macOS by Apple
CVE-2026-86981

5.5MEDIUM

Key Information:

Vendor

Apple
Status
Mac OS
Vendor
CVE Published:
20 October 2026

What is CVE-2026-86981?

An out-of-bounds write vulnerability was rectified with enhanced bounds checking, which could allow an application to cause unexpected system termination. Users of macOS Sequoia 15.8 and macOS Tahoe 26.7 are encouraged to update their systems to safeguard against potential exploitation. For detailed information, please refer to the support documentation provided by Apple.

Affected Version(s)

macOS 0 < 15.8

macOS 0 < 26.7

References

https://support.apple.com/en-us/149042
https://support.apple.com/en-us/149043

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.