Apple Safari & OSes DoS via memory handling (fixed 18.6)
CVE-2025-43211 Published on July 30, 2025
The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, macOS Sequoia 15.6, iPadOS 17.7.9, iOS 18.6 and iPadOS 18.6, tvOS 18.6, watchOS 11.6, visionOS 2.6. Processing web content may lead to a denial-of-service.
Vulnerability Analysis
CVE-2025-43211 can be exploited with local system access, and does not require authorization privileges or 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
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2025-43211
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Affected Versions
Apple Safari:- Version unspecified and below 18.6 is affected.
- Version unspecified and below 17.7 is affected.
- Version unspecified and below 15.6 is affected.
- Version unspecified and below 18.6 is affected.
- Version unspecified and below 2.6 is affected.
- Version unspecified and below 11.6 is affected.
- Version unspecified and below 18.6 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.