RCE in Tenda Ch22
CVE-2026-77031
A vulnerability has been found in Tenda CH22 1.0.0.1. The affected element is the function formcreateFileName of the file /goform/formcreateFileName. The manipulation of the argument fileNameMit leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.027 (85.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.027 · change: +0.014
Affected products
- Tenda Ch22 — versions 1.0.0.1
Weakness classification (CWE)
References
- vuldb.com/vuln/393642 (technical-description, vdb-entry)
- vuldb.com/vuln/393642/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-77031 (third-party-advisory)
- vuldb.com/submit/880667 (third-party-advisory)
- candle-throne-f75.notion.site/Tenda-CH22-formcreateFileName-392df0aa118580c38c4… (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-77031?
- CVE-2026-77031 is a high-severity vulnerability in Tenda Ch22, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.4/10. Published 2026-08-20.
- How severe is CVE-2026-77031?
- High severity. CVSS v3 base score is 7.4 out of 10.