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PatchSiren cyber security CVE debrief

CVE-2026-43802 Apple CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T21:17:03.450Z and has not been modified since then. The CVE-2026-43802 vulnerability involves an out-of-bounds write issue that was addressed with improved bounds checking in various Apple operating systems, including iOS, iPadOS, macOS Sequoia, macOS Sonoma, and macOS Tahoe. An app may be able to cause unexpected system termination. Limited information is available on the exact scope of affected systems and potential attack vectors. Further verification is needed to determine the extent of the vulnerability and to identify any additional affected systems. Defenders should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance.

Vendor
Apple
Product
iOS and iPadOS
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-27
Original CVE updated
2026-08-17
Advisory published
2026-07-27
Advisory updated
2026-08-17

Who should care

Organizations and individuals using Apple products, specifically those running iOS, iPadOS, macOS Sequoia, macOS Sonoma, and macOS Tahoe, should be aware of this critical vulnerability and apply patches immediately. IT teams and security professionals responsible for managing and securing Apple devices should prioritize patching to prevent potential system termination caused by an app exploiting this vulnerability.

Technical summary

The CVE-2026-43802 vulnerability involves an out-of-bounds write issue that was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination. The vulnerability affects Apple products, specifically those running iOS, iPadOS, macOS Sequoia, macOS Sonoma, and macOS Tahoe. The issue can be mitigated by applying patches for the affected systems.

Defensive priority

Critical vulnerability in Apple products

Recommended defensive actions

  • Apply patches for iOS 18.7.10 and iPadOS 18.7.10
  • Apply patches for macOS Sequoia 15.7.8
  • Apply patches for macOS Sonoma 14.8.8
  • Apply patches for macOS Tahoe 26.6
  • Inventory affected Apple products and prioritize patching

Evidence notes

The CVE-2026-43802 record indicates an out-of-bounds write issue addressed with improved bounds checking in various Apple operating systems. Limited information is available on the exact scope of affected systems and potential attack vectors. Further verification is needed to determine the extent of the vulnerability and to identify any additional affected systems. Defenders should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T21:17:03.450Z and has not been modified since then.