Buffer overflow in Tenda W20e
CVE-2026-11524
A vulnerability has been found in Tenda W20E 15.11.0.6. Impacted is the function modifyWifiFilterRules of the file /goform/modifyWifiFilterRules of the component Web Management Interface. The manipulation of the argument wifiFilterListRemark leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Vulnerability class: Buffer Overflow
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: 0.005 (39.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Tenda W20e — versions 15.11.0.6
Weakness classification (CWE)
References
- github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formWifiFilterRulesModify/m… (exploit)
- vuldb.com/cve/CVE-2026-11524 (third-party-advisory)
- vuldb.com/submit/836478 (third-party-advisory)
- vuldb.com/vuln/369144 (technical-description, vdb-entry)
- vuldb.com/vuln/369144/cti (signature, permissions-required)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-11524?
- CVE-2026-11524 is a high-severity vulnerability in Tenda W20e, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-06-08.
- How severe is CVE-2026-11524?
- High severity. CVSS v3 base score is 8.8 out of 10.