Apple Safari CVE-2025-43343 memory handling crash
CVE-2025-43343 Published on September 15, 2025
The issue was addressed with improved memory handling. This issue is fixed in Safari 26, tvOS 26, watchOS 26, iOS 26 and iPadOS 26, visionOS 26. Processing maliciously crafted web content may lead to an unexpected process crash.
Vulnerability Analysis
CVE-2025-43343 can be exploited with network 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 be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2025-43343 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2025-43343
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Affected Versions
Apple iOS and iPadOS:- Version unspecified and below 26 is affected.
- Version unspecified and below 26 is affected.
- Version unspecified and below 26 is affected.
- Version unspecified and below 26 is affected.
- Version unspecified and below 26 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.