CVE-2026-19822: Tenda W20E QoS Edit editQos lstAdd stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-08-14
Weakness: CWE-119

Description

A vulnerability was identified in Tenda W20E 15.11.0.6(1068_1546_841)_CN_TDC. This issue affects the function lstAdd of the file /goform/editQos of the component QoS Edit. Such manipulation of the argument qosListConnecttedNum leads to stack-based buffer overflow. The attack may be launched remotely. The exploit is publicly available and might be used.

Affected products

Tenda W20E: 15.11.0.6(1068_1546_841)_CN_TDC

References

https://github.com/paueger/mycve/blob/main/Tenda_W20E/3.md
https://vuldb.com/cve/CVE-2026-19822
https://vuldb.com/submit/869006
https://vuldb.com/vuln/389955
https://vuldb.com/vuln/389955/cti
https://www.tenda.com.cn/

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