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PatchSiren cyber security CVE debrief

CVE-2026-43733 Apple CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T21:16:58.000Z and has not been modified since then. The CVE-2026-43733 vulnerability is caused by improper memory handling when processing maliciously crafted images, affecting multiple Apple products, including iOS, iPadOS, macOS Sequoia, and macOS Tahoe. To exploit this vulnerability, an attacker would need to trick a user into processing a maliciously crafted image, potentially leading to arbitrary code execution. Organizations and individuals using Apple products should be aware of this vulnerability and take necessary precautions to protect themselves. This includes applying patches and restricting processing of untrusted images. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity.

Vendor
Apple
Product
iOS and iPadOS
CVSS
HIGH 7.8
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, and macOS Tahoe, should be aware of this vulnerability and take necessary precautions to protect themselves. This includes applying patches and restricting processing of untrusted images.

Technical summary

The CVE-2026-43733 vulnerability is caused by improper memory handling when processing maliciously crafted images. This issue affects multiple Apple products, including iOS, iPadOS, macOS Sequoia, and macOS Tahoe. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. To exploit this vulnerability, an attacker would need to trick a user into processing a maliciously crafted image, potentially leading to arbitrary code execution.

Defensive priority

High-priority defensive actions are recommended due to the HIGH CVSS score of 7.8. A maliciously crafted image could corrupt process memory, potentially leading to arbitrary code execution.

Recommended defensive actions

  • Apply patches: iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6
  • Inventory and verify affected products and versions
  • Implement compensating controls, such as monitoring and exception tracking
  • Restrict processing of untrusted images
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE record indicates that the issue was addressed with improved memory handling in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. However, the exact scope of affected products and versions is not explicitly stated, and further verification is needed to determine the full impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-43733 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-43733

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

  • CVE-2026-43733 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-43733

    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.