Apple Safari race condition leads to crash from malicious content
CVE-2025-43531 Published on December 17, 2025
A race condition was addressed with improved state handling. This issue is fixed in watchOS 26.2, Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, visionOS 26.2, tvOS 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.
Vulnerability Analysis
CVE-2025-43531 can be exploited with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is a Race Condition Vulnerability?
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
CVE-2025-43531 has been classified to as a Race Condition vulnerability or weakness.
Products Associated with CVE-2025-43531
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Affected Versions
Apple iOS and iPadOS:- Version unspecified and below 18.7 is affected.
- Version unspecified and below 26.2 is affected.
- Version unspecified and below 26.2 is affected.
- Version unspecified and below 26.2 is affected.
- Version unspecified and below 26.2 is affected.
- Version unspecified and below 26.2 is affected.
- Version unspecified and below 26.2 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.