Buffer Overflow Vulnerability in macOS by Apple
CVE-2026-84581

8.4HIGH

Key Information:

Vendor

Apple
Status
Mac OS
Vendor
CVE Published:
14 September 2026

What is CVE-2026-84581?

A vulnerability has been identified in macOS that enables a buffer overflow through improperly validated input when mounting a maliciously crafted disk image. This flaw can lead to unexpected system termination or potentially corrupt kernel memory. Apple has addressed this issue in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7, enhancing the bounds checking process to mitigate risks associated with this vulnerability.

Affected Version(s)

macOS 0 < 15.8

macOS 0 < 26.7

macOS 0 < 27

References

https://support.apple.com/en-us/149035
https://support.apple.com/en-us/149042
https://support.apple.com/en-us/149043

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.