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PatchSiren cyber security CVE debrief

CVE-2026-43701 Apple CVE debrief

Apple has addressed a vulnerability in multiple products, including Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The issue was addressed with improved checks, fixing a problem where a malicious website may be able to process restricted web content outside the sandbox. This vulnerability has a high severity with a CVSS score of 7.1. Users of affected products should apply security updates immediately to prevent potential exploitation.

Vendor
Apple
Product
Safari
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-29
Original CVE updated
2026-08-17
Advisory published
2026-06-29
Advisory updated
2026-08-17

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 exploitation. This vulnerability has a high severity and could allow malicious websites to access restricted content.

Technical summary

The vulnerability, addressed 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, and watchOS 26.6, involves improper checks 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 is fixed in the latest versions of the affected products.

Defensive priority

High priority should be given to applying the security updates for this vulnerability, as it could allow malicious websites to access restricted 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.
  • Monitor web browsing activities for potential suspicious behavior.
  • 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 2026-06-29T20:17:35.173Z and was last modified on 2026-07-27T21:16:53.773Z. The NVD entry is currently Modified. This vulnerability affects multiple Apple products, including Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The issue was addressed with improved checks, fixing a problem where a malicious website may be able to process restricted web content outside the sandbox. Evidence of exploitation is limited, and defenders should verify affected product deployments and apply security updates.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-43701 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-43701

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-43701 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-43701

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.