macOS DoS via bad input validation (fixed in 27, 15.8, 26.7)
CVE-2026-84538 Published on September 14, 2026
A denial-of-service issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A remote attacker may be able to cause a denial-of-service.
Vulnerability Analysis
CVE-2026-84538 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-84538
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Affected Versions
Apple macOS:- Before 15.8 is affected.
- Before 26.7 is affected.
- Before 27 is affected.