Is there a public exploit for CVE-2026-121556?

No public exploit for CVE-2026-121556 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-2026-121556?

CVE-2026-121556 scores CVSS 8.7 (v4.0), rated high.

What does CVE-2026-121556 affect?

CVE-2026-121556 affects beecue FastBee.

8.7 High

FastBee through 2.1.0 contains an insecure direct object reference vulnerability in ProductController that allows authenticated tenant…

CVE-2026-121556

FastBee through 2.1.0 contains an insecure direct object reference vulnerability in ProductController that allows authenticated tenant users to access other tenants' products by supplying their product IDs. Attackers can enumerate sequential product IDs to read MQTT account, password, and secret values, overwrite product configuration including tenantid, or delete products with cascading rows.

Assessment

CVSS: 8.7 (v4.0)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: beecue · FastBee
Assigner: VulnCheck

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

At the source

EUVD (ENISA)

References

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