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CVE-2026-11523

Tenda W20E Web Management PortalAuth formPortalAuth stack-based overflow

CVSS 8.7 HIGHEPSS 0.5%CWE-119CWE-121
A flaw has been found in Tenda W20E 15.11.0.6. This issue affects the function formPortalAuth of the file /goform/PortalAuth of the component Web Management Interface. Executing a manipulation of the argument gotoUrl can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used.
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
Affected products
Tenda · W20E
public PoCs found — 1
cve_referencegithub.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.mdunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.mdhttps://vuldb.com/cve/CVE-2026-11523https://vuldb.com/submit/836471https://vuldb.com/vuln/369143https://vuldb.com/vuln/369143/ctihttps://www.tenda.com.cn/