CVE-2026-28742CWE-321

Naxclow IoT Platform Use of hard-coded cryptographic key

Critical · published June 12, 2026

CVSS v4.0
9.2
EPSS
1%
Percentile
42.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.2 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00512 · 42.8th percentile
Weakness
CWE-321 · Use of Hard-coded Cryptographic Key
Published
2026-06-12T18:03Z
EPSS history
Timeline
  • 12 JUN 18:03Z
    Naxclow IoT Platform Use of hard-coded cryptographic key
    cvelistv5