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CVE-2026-28742

Naxclow Smart Doorbell X3 CWE-321

Naxclow devices use a uniform request-signing scheme based on a hard-coded, platform-wide salt embedded in every firmware image. Once this salt is recovered from any device, an attacker can generate valid signatures for arbitrary device or account operations due to the absence of per-device keys, server-side nonce tracking, or replay protections. Combined with the system’s use of plain HTTP for control-plane traffic, the construction enables broad request forgery and impersonation across the platform.

CVSS Score
9.8
Critical
EPSS — Exploit Probability
0.3%
Riskier than 26% of all CVEs · checked 2026-09-13
Exploitation
Not in CISA KEV
KEV does not include every exploited vulnerability
Remediation
unknown
Check vendor advisories
NVD entry PoC / advisory

1 article across 1 outlet · first covered Jun 16, 2026 · latest Jun 16, 2026

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