Severity by source
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable relay (AV:N); attacker must first acquire the non-rotatable credential (AC:H); no victim auth or interaction needed (PR:N/UI:N); full eavesdrop/impersonation impacts confidentiality and integrity, availability impact is limited.
Primary rating from Vendor (icscert).
CVSS VectorVendor: icscert
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionCVE.org
Naxclow devices use a server-side, per-device relay credential that never rotates and is re-issued to the device on each boot. Because this credential remains valid indefinitely and cannot be reset or revoked by the legitimate owner, any party that obtains it through any exposure path can maintain persistent access to the device’s relay channel. This enables long-term impersonation or interception, even after factory resets or re-onboarding.
AnalysisAI
Persistent credential exposure in Naxclow smart cameras and doorbells (Smart Doorbell X3, X Smart Home, V720, ix Cam) allows anyone who obtains a device's server-side relay credential to maintain indefinite access to that device's relay channel. Because the credential is re-issued unchanged on every boot and cannot be rotated, reset, or revoked by the owner, even factory resets and re-onboarding do not evict an attacker. No public exploit identified at time of analysis, and EPSS/KEV signals are not provided in the input.
Technical ContextAI
Naxclow consumer IoT devices (cameras, doorbells) communicate with users via a vendor-operated relay/cloud service rather than direct LAN connections, using a per-device credential to authenticate the device on that relay channel. CWE-262 (Not Using Password Aging) captures the root cause: the relay credential is assigned server-side, lacks any rotation or revocation lifecycle, and is re-pushed to the device at every boot, meaning the device-to-cloud trust anchor is effectively immutable for the life of the unit. CPE data (naxclow:smart_doorbell_x3, x_smart_home, v720, ix_cam - all version wildcards) confirms the flaw is in the shared backend/firmware design rather than a single model or build.
RemediationAI
No vendor-released patch identified at time of analysis - because the flaw is in how the vendor's backend issues and manages the relay credential, a true fix requires server-side credential rotation logic plus a firmware update that accepts rotated credentials, which has not been confirmed in the supplied references. Until Naxclow publishes a fix (track https://www.cisa.gov/news-events/ics-advisories/icsa-26-162-02 for updates), the only effective compensating control is to remove the devices from any sensitive deployment and isolate them on a segmented VLAN with no inbound access to monitored areas, accepting that the relay channel itself cannot be trusted; blocking the vendor relay endpoints at the perimeter kills the cloud feature (and the device's primary functionality), so users who depend on remote viewing should consider replacing affected models rather than mitigating in place. Factory reset and re-onboarding are explicitly ineffective per the description and should not be relied on.
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Device takeover in Naxclow's IoT platform (Smart Doorbell X3, X Smart Home, V720, and iX Cam) allows any authenticated a
Unauthorized credential disclosure in the Naxclow IoT platform API (affecting Smart Doorbell X3, X Smart Home, V720, and
Fleet enumeration in the Naxclow smart home platform (Smart Doorbell X3, X Smart Home, V720, Ix Cam) allows unauthentica
Device identifier enumeration across Naxclow's IoT product line - including the Smart Doorbell X3, X Smart Home platform
WiFi credential exposure in Naxclow IoT device firmware (Smart Doorbell X3, X Smart Home, V720, Ix Cam) allows any attac
Same weakness CWE-262 – Not Using Password Aging
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-36526
GHSA-x3mh-94rm-26c7