Vulnerability · Published Jun 8, 2026 · Assigned by VulDB

CVE-2026-11524Tenda W20E Web Management modifyWifiFilterRules stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in W20E from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 59.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Tenda	W20E	15.11.0.6

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-369144 | Tenda W20E Web Management modifyWifiFilterRules stack-based overflow vdb-entry, technical-description
VDB-369144 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-11524 | CVE Analysis and Report third-party-advisory
Submit #836478 | Tenda Tenda W20E Enterprise Router V15.11.0.6 Stack-based Buffer Overflow third-party-advisory
https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formWifiFilterRulesModify/modifyWifiFilterRules.md exploit
https://www.tenda.com.cn/ product