Apple macOS DoS via Cache Mishandling (fixed macOS 14.8.4/15.7.4/26.3)
CVE-2026-20602 Published on February 11, 2026
The issue was addressed with improved handling of caches. This issue is fixed in macOS Sequoia 15.7.4, macOS Tahoe 26.3, macOS Sonoma 14.8.4. An app may be able to cause a denial-of-service.
Vulnerability Analysis
CVE-2026-20602 is exploitable with local system access, and requires small amount of user privileges. 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
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-20602 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-20602
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Affected Versions
Apple macOS:- Version unspecified and below 26.3 is affected.
- Version unspecified and below 15.7 is affected.
- Version unspecified and below 14.8 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.