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PatchSiren cyber security CVE debrief

CVE-2025-43202 Apple CVE debrief

A high-severity vulnerability CVE-2025-43202 was addressed by Apple in iOS 18.6, iPadOS 18.6, and macOS Sequoia 15.6. Processing a file may lead to memory corruption. This vulnerability has a high CVSS score of 8.8, indicating a high severity level. The issue was triggered by processing a malicious file, potentially leading to memory corruption. Organizations and individuals using Apple devices, especially those handling sensitive data or requiring high security, should prioritize patching.

Vendor
Apple
Product
iOS and iPadOS
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-02
Original CVE updated
2026-07-20
Advisory published
2026-04-02
Advisory updated
2026-07-20

Who should care

Organizations and individuals using Apple devices, especially those handling sensitive data or requiring high security, should prioritize patching. This includes operators of Apple devices, platform administrators, vulnerability management teams, and security teams. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

CVE-2025-43202 is a high-severity memory corruption vulnerability in Apple devices. The issue was addressed with improved memory handling in iOS 18.6, iPadOS 18.6, and macOS Sequoia 15.6. The vulnerability is triggered by processing a malicious file, potentially leading to memory corruption. The CVSS score is 8.8, indicating a high severity level. This vulnerability affects Apple devices, specifically those running iOS, iPadOS, and macOS.

Defensive priority

High priority due to high CVSS score and potential for memory corruption.

Recommended defensive actions

  • Apply patches: Upgrade to iOS 18.6, iPadOS 18.6, or macOS Sequoia 15.6.
  • Inventory and verify: Check Apple device inventory and verify patch deployment.
  • Monitor and respond: Monitor for suspicious file processing activities and respond to potential memory corruption incidents.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • 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.

Evidence notes

The CVE record was published on 2026-04-02T19:20:03.913Z and last modified on 2026-07-20T20:10:00.110Z. The NVD entry is currently Analyzed. This information is based on the NVD entry and CVE record. The vulnerability affects Apple devices, specifically those running iOS, iPadOS, and macOS. The issue was addressed with improved memory handling in iOS 18.6, iPadOS 18.6, and macOS Sequoia 15.6.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-43202 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-43202

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

  • CVE-2025-43202 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-43202

    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.