CVE-2026-43725: A malicious website may be able to process restricted web content outside the sandbox in Apple Safari
The issue 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, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website may be able to process restricted web content outside the sandbox.
AI Analysis
Technical Summary
CVE-2026-43725 is a high-severity vulnerability in Apple Safari where a malicious website may bypass sandbox restrictions and process restricted web content outside the sandbox environment. The root cause is inadequate input validation. Apple fixed this vulnerability by improving input validation in Safari 26.5.2 and related OS versions including iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. The vulnerability affects Safari versions earlier than 26.5.2. There are no known exploits in the wild at this time.
Potential Impact
Successful exploitation could allow a malicious website to escape the sandbox protections in Safari, potentially leading to unauthorized access to restricted web content. This could result in partial confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:L/I:L/A:L).
Mitigation Recommendations
The vulnerability is fixed in Safari 26.5.2 and corresponding OS updates (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update affected Safari browsers and operating systems to these versions or later to remediate the issue. Patch status is confirmed by the vendor advisory.
CVE-2026-43725: A malicious website may be able to process restricted web content outside the sandbox in Apple Safari
Description
The issue 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, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website may be able to process restricted web content outside the sandbox.
CVSS v3.1
Score 7.1high
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43725 is a high-severity vulnerability in Apple Safari where a malicious website may bypass sandbox restrictions and process restricted web content outside the sandbox environment. The root cause is inadequate input validation. Apple fixed this vulnerability by improving input validation in Safari 26.5.2 and related OS versions including iOS, iPadOS, macOS Tahoe, tvOS, visionOS, and watchOS. The vulnerability affects Safari versions earlier than 26.5.2. There are no known exploits in the wild at this time.
Potential Impact
Successful exploitation could allow a malicious website to escape the sandbox protections in Safari, potentially leading to unauthorized access to restricted web content. This could result in partial confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:L/I:L/A:L).
Mitigation Recommendations
The vulnerability is fixed in Safari 26.5.2 and corresponding OS updates (iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6). Users and administrators should update affected Safari browsers and operating systems to these versions or later to remediate the issue. Patch status is confirmed by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.645Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42d3d427e9c7971972d13f
Added to database: 06/29/2026, 20:21:40 UTC
Last enriched: 07/30/2026, 00:56:54 UTC
Last updated: 08/14/2026, 00:41:12 UTC
Views: 156
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.