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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.016 (75.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Tenda F451 — versions 1.0.0.7, 1.0.0.9
Weakness classification (CWE)
References
- github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formWriteFacMac2/formWriteF… (exploit)
- vuldb.com/cve/CVE-2026-11556 (third-party-advisory)
- vuldb.com/submit/836476 (third-party-advisory)
- vuldb.com/vuln/369166 (technical-description, vdb-entry)
- vuldb.com/vuln/369166/cti (signature, permissions-required)
- www.tenda.com.cn/ (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.