CVE-2026-43676: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds access in Apple Safari that can be triggered by processing specially crafted web content, leading to an unexpected crash of the browser. The issue is fixed in Safari 26.5.2 and corresponding updates for iOS, iPadOS, macOS Tahoe, visionOS, and watchOS. The CVSS score is 6.5, indicating a medium severity impact primarily affecting availability. There is no indication of confidentiality or integrity impact. No vendor advisory or explicit patch link is provided, but the description states the issue is fixed in version 26.5.2 and later.
Potential Impact
Successful exploitation causes an unexpected crash of Safari, impacting availability. There is no reported impact on confidentiality or integrity. No known exploits are currently observed in the wild.
Mitigation Recommendations
Users and administrators should update Safari and the related Apple operating systems to version 26.5.2 or later, where the issue is fixed with improved bounds checking. Patch status is confirmed by the vendor's versioning information in the description. No additional mitigation steps are indicated.
CVE-2026-43676: Processing maliciously crafted web content may lead to an unexpected Safari crash in Apple Safari
Description
An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, visionOS 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
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds access in Apple Safari that can be triggered by processing specially crafted web content, leading to an unexpected crash of the browser. The issue is fixed in Safari 26.5.2 and corresponding updates for iOS, iPadOS, macOS Tahoe, visionOS, and watchOS. The CVSS score is 6.5, indicating a medium severity impact primarily affecting availability. There is no indication of confidentiality or integrity impact. No vendor advisory or explicit patch link is provided, but the description states the issue is fixed in version 26.5.2 and later.
Potential Impact
Successful exploitation causes an unexpected crash of Safari, impacting availability. There is no reported impact on confidentiality or integrity. No known exploits are currently observed in the wild.
Mitigation Recommendations
Users and administrators should update Safari and the related Apple operating systems to version 26.5.2 or later, where the issue is fixed with improved bounds checking. Patch status is confirmed by the vendor's versioning information in the description. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.641Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d027e9c7971972c7b5
Added to database: 06/29/2026, 20:21:36 UTC
Last enriched: 07/30/2026, 00:54:08 UTC
Last updated: 08/10/2026, 00:41:16 UTC
Views: 53
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.