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PatchSiren cyber security CVE debrief

CVE-2026-43712 Apple CVE debrief

Apple has addressed a vulnerability in multiple products that could lead to an unexpected process crash when processing maliciously crafted web content. This issue was 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 is related to improved memory handling. Users of Apple products, particularly those who use Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, should apply the available updates to prevent potential crashes from malicious web content.

Vendor
Apple
Product
Safari
CVSS
MEDIUM 6.5
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 available updates to prevent potential crashes from malicious web content. This is a medium-priority issue, and users should ensure that all Apple products are running the latest software versions.

Technical summary

The vulnerability, addressed with improved memory handling, could lead to an unexpected process crash when processing maliciously crafted web content. This issue affects multiple Apple products, including Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. The CVSS score for this vulnerability is 6.5, with a severity rating of MEDIUM. The vulnerability can be exploited by processing malicious web content, which may lead to a denial of service.

Defensive priority

Medium priority should be given to applying the available updates, as the vulnerability could potentially be used to cause a denial of service. Users should be cautious when processing web content from untrusted sources and ensure that all Apple products are running the latest software versions. Additionally, users should review the official advisory for specific guidance and verify the affected products and versions.

Recommended defensive actions

  • Apply the available updates for Safari, iOS, iPadOS, macOS, tvOS, visionOS, and watchOS.
  • Ensure that all Apple products are running the latest software versions.
  • Be cautious when processing web content from untrusted sources.
  • Review the official advisory for specific guidance and verify the affected products and versions.
  • 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 2026-06-29T20:17:35.977Z and was last modified on 2026-07-27T21:16:55.217Z. The NVD entry is currently Modified. This information is based on the CVE record and NVD entry. Defenders should verify the affected products and versions, and review the official advisory for specific guidance.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-06-29T20:17:35.977Z and has not been modified since then. The NVD entry is currently Modified.