Vulnerability record · CVE-2026-11556 · published 8 June 2026

CVE-2026-11556: Command injection vulnerability

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.

7.4 CVSS 4.0 High EPSS 1.6% · top 25.0% CWE-77 · Command injectionCWE-78 · OS command injection Deferred

7.4CVSS 4.0 base score, v2 9.0

1.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

6References

23 Jul 2026Last modified by NVD

Description

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formWriteFacMac2/formWriteFacMac.md
https://vuldb.com/cve/CVE-2026-11556
https://vuldb.com/submit/836476
https://vuldb.com/vuln/369166
https://vuldb.com/vuln/369166/cti
https://www.tenda.com.cn/

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Source: NIST National Vulnerability Database (record CVE-2026-11556), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.