PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-43725 Apple CVE debrief

A malicious website may be able to process restricted web content outside the sandbox due to improper input validation in various Apple products. This issue was addressed with improved input validation and 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. The vulnerability has a CVSS score of 7.1, indicating high severity. Users of Apple products, particularly those who use Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, should apply the security updates to prevent potential malicious web content processing.

Vendor
Apple
Product
Safari
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-29
Original CVE updated
2026-07-27
Advisory published
2026-06-29
Advisory updated
2026-07-27

Who should care

Users of Apple products, particularly those who use Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, should apply the security updates to prevent potential malicious web content processing. Operators, security teams, and administrators of these platforms should prioritize updating their systems and monitoring for potential threats.

Technical summary

The vulnerability, addressed in various Apple products, involves improper input validation that could allow a malicious website to process restricted web content outside the sandbox. The CVSS score for this vulnerability is 7.1, indicating a high severity. This issue was addressed with improved input validation and 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. Users should ensure that all Apple products are updated to the latest versions.

Defensive priority

High priority should be given to applying the security updates for this vulnerability, as it could be exploited by malicious websites to process restricted web content.

Recommended defensive actions

  • Apply the security updates for Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS.
  • Ensure that all Apple products are updated to the latest versions.
  • Be cautious when visiting unknown or untrusted websites.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record was published on 2026-06-29T20:17:36.937Z and was last modified on 2026-07-27T21:16:56.907Z. The NVD entry is currently Modified. This issue was addressed with improved input validation and 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. Users should verify the updates are applied and monitor for potential malicious web content processing.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-06-29T20:17:36.937Z and has not been modified since then. The NVD entry is currently Modified.