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PatchSiren cyber security CVE debrief

CVE-2026-42947 Naxclow CVE debrief

A flaw in Naxclow's platform’s onboarding workflow allows an attacker to replay a confirm-then-bind sequence to silently reassign a device to an arbitrary account. Because the affected endpoints validate request signatures but do not confirm legitimate ownership, an attacker with any account can take over a device without user interaction while the device remains online and unaware.

Vendor
Naxclow
Product
Smart Doorbell X3
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-11
Advisory published
2026-06-11
Advisory updated
2026-06-11

Who should care

Users of Naxclow's platform, particularly those with devices currently online and potentially vulnerable to device takeover.

Technical summary

The vulnerability exists in the onboarding workflow of Naxclow's platform. An attacker can exploit this by replaying a confirm-then-bind sequence, allowing them to silently reassign a device to an arbitrary account. The affected endpoints validate request signatures but fail to confirm legitimate ownership, enabling an attacker with any account to take over a device without user interaction.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the vulnerability in the onboarding workflow.
  • Review and update device configurations to ensure that only authorized accounts can interact with devices.
  • Monitor device activity for any suspicious behavior that could indicate an attempted or successful device takeover.

Evidence notes

The CVE-2026-42947 record indicates a HIGH severity vulnerability with a CVSS score of 8.7. References include advisories from ICS-CERT.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42947 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42947

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

  • CVE-2026-42947 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42947

    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.