Resource Exhaustion Vulnerability in macOS Products by Apple
CVE-2026-84553

7.5HIGH

Key Information:

Vendor

Apple
Status
Mac OS
Vendor
CVE Published:
14 September 2026

What is CVE-2026-84553?

A resource exhaustion vulnerability has been identified in certain versions of macOS, which could be exploited by a remote attacker to potentially induce a denial-of-service condition. This issue stems from insufficient input validation, leading to system performance degradation. Apple has addressed this vulnerability in the latest updates, including macOS Golden Gate 27, Sequoia 15.8, and Tahoe 26.7, ensuring enhanced system security.

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:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.