CVE-2026-43717: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in Apple Safari's memory management when handling certain crafted web content. Exploiting this flaw can lead to an unexpected crash of the Safari browser, impacting availability. The issue is fixed in Safari 26.5.2 and related OS updates. There are no known exploits in the wild, and the vulnerability does not affect confidentiality or integrity of data.
Potential Impact
Successful exploitation results in denial of service by causing Safari to crash unexpectedly. There is no indication of data compromise or privilege escalation. The impact is limited to availability disruption of the Safari browser.
Mitigation Recommendations
Apply the official update to Safari version 26.5.2 or later, as well as the corresponding updates for iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, and watchOS 26.6. These updates address the use-after-free vulnerability with improved memory management. No other mitigation is indicated.
CVE-2026-43717: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in Apple Safari's memory management when handling certain crafted web content. Exploiting this flaw can lead to an unexpected crash of the Safari browser, impacting availability. The issue is fixed in Safari 26.5.2 and related OS updates. There are no known exploits in the wild, and the vulnerability does not affect confidentiality or integrity of data.
Potential Impact
Successful exploitation results in denial of service by causing Safari to crash unexpectedly. There is no indication of data compromise or privilege escalation. The impact is limited to availability disruption of the Safari browser.
Mitigation Recommendations
Apply the official update to Safari version 26.5.2 or later, as well as the corresponding updates for iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, and watchOS 26.6. These updates address the use-after-free vulnerability with improved memory management. No other mitigation is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.644Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d327e9c7971972d06f
Added to database: 06/29/2026, 20:21:39 UTC
Last enriched: 07/30/2026, 00:56:08 UTC
Last updated: 08/12/2026, 12:41:09 UTC
Views: 48
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