What is CVE-2026-11556?

CVE-2026-11556 is a high-severity vulnerability in Tenda F451, classified under Command Injection. CVSS score: 8.8/10. Published 2026-06-08.

How severe is CVE-2026-11556?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Tenda F451

CVE-2026-11556

A security flaw has been discovered in Tenda F451 1.0.0.7/1.0.0.9. Impacted is the function formWriteFacMac of the file /goform/WriteFacMac of the component Web Management Interface. Performing a manipulation of the argument mac results in os command injection. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.016 (74.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda F451 — versions 1.0.0.7, 1.0.0.9

Weakness classification (CWE)

References

cna@vuldb.com (exploit)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-11556?: CVE-2026-11556 is a high-severity vulnerability in Tenda F451, classified under Command Injection. CVSS score: 8.8/10. Published 2026-06-08.
How severe is CVE-2026-11556?: High severity. CVSS v3 base score is 8.8 out of 10.