Is there a public exploit for CVE-2026-75491?

No public exploit for CVE-2026-75491 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-75491?

CVE-2026-75491 scores CVSS 9.2 (v4.0), rated critical.

What does CVE-2026-75491 affect?

CVE-2026-75491 affects Shenzhen Cudy Technology Co., Ltd. TR3000 1.0.

9.2 Critical

Cudy TR3000 before 2.5.42 contains an authentication bypass vulnerability in the Mosquitto plugin authpluginjwt.so that accepts unsigned…

CVE-2026-75491

Cudy TR3000 before 2.5.42 contains an authentication bypass vulnerability in the Mosquitto plugin authpluginjwt.so that accepts unsigned JWTs using alg none. Attackers holding any Cudy-trusted client certificate can authenticate as admincudydevice on port 8883 and publish batchcmd requests to execute commands as root.

Assessment

CVSS: 9.2 (v4.0)
Severity: Critical
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 13 November 2026
Last updated: 13 November 2026
Affected: Shenzhen Cudy Technology Co., Ltd. · TR3000 1.0
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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