CVE-2026-43718
Received Received - Intake

Stack Overflow in Safari 26.5.2

Publication date: 2026-06-29

Last updated on: 2026-06-29

Assigner: Apple Inc.

Description
A stack overflow was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

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Meta Information

Published
2026-06-29
Last Modified
2026-06-29
Generated
2026-06-30
AI Q&A
2026-06-29
EPSS Evaluated
N/A
NVD
CVE-2026-43718

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
apple safari 26.5.2
apple ios 26.5.2
apple ipados 26.5.2
apple macos_tahoe 26.5.2

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

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Executive Summary

This vulnerability is a stack overflow issue in Safari and related Apple operating systems. It occurs when processing maliciously crafted web content, which can cause Safari to crash unexpectedly. The problem was addressed by improving input validation to prevent the overflow.

Impact Analysis

The vulnerability can cause Safari or the affected Apple operating systems (iOS, iPadOS, macOS Tahoe) to crash unexpectedly when processing malicious web content. This may disrupt your browsing experience and could potentially be exploited to cause denial of service.

Mitigation Strategies

To mitigate this vulnerability, update Safari, iOS, iPadOS, and macOS Tahoe to version 26.5.2 or later, where the issue has been fixed.

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