Apple Safari OOB Crash via Bad Web Content – fixed in macOS Sequoia 15.6
CVE-2025-43209 Published on July 30, 2025
An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, macOS Sequoia 15.6, macOS Sonoma 14.7.7, macOS Ventura 13.7.7, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Vulnerability Analysis
CVE-2025-43209 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 Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2025-43209 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2025-43209
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Affected Versions
Apple iOS and iPadOS:- Before 18.6 is affected.
- Before 17.7.9 is affected.
- Before 13.7.7 is affected.
- Before 14.7.7 is affected.
- Before 15.6 is affected.
- Before 18.6 is affected.
- Before 2.6 is affected.
- Before 11.6 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.