PT-2021-5413
CVE-2021-30761
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Published
2019-11-04
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Updated
2025-10-23
Description by
CVSS 2.0
9.3
HighMetricsAV:N/AC:M/Au:N/C:C/I:C/A:C
Name of the Vulnerable Software and Affected Versions
Apple iOS versions prior to 12.5.4
Description
A memory corruption issue was addressed with improved state management. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited. The issue is related to a buffer overflow when handling HTML content, which can allow a remote attacker to execute arbitrary code using a specially crafted malicious website.
Recommendations
For versions prior to 12.5.4, update to iOS 12.5.4 to resolve the issue. As a temporary workaround, consider restricting access to malicious web content to minimize the risk of exploitation. Avoid using the affected WebKit module until the issue is resolved.
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