CVE-2026-19822
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk46th percentile - higher than 46% of all known CVEs
Summary
A vulnerability was identified in Tenda W20E 15.11.0.6(1068_1546_841)_CN_TDC. The function lstAdd of the file /goform/editQos in the QoS Edit component is affected. Manipulation of the argument qosListConnecttedNum leads to stack-based buffer overflow. The attack may be launched remotely, and the exploit is publicly available.
Risk Assessment
A remote attacker can cause device crash or potentially execute code, disrupting network operations and compromising security.
Recommendation
Check for and apply firmware updates from the vendor, and restrict access to the device's administrative interface.
Other vulnerabilities in Tenda W20E
See all- CVE-2026-67967Critical
A buffer overflow vulnerability in Tenda W20E V16.01.0.6(2782) allows an attacker to execute arbitrary code. This is an incomplete fix for CVE-2025-44867 and CVE-2026-36819.
- CVE-2026-67966Critical
The /goform/telnet endpoint in Tenda W20E V16.01.0.6(2782) allows unauthenticated remote attackers to activate the Telnet daemon and obtain root shell access.
- CVE-2026-67965Critical
An issue in Tenda W20E v.16.01.0.6(2782) allows a remote attacker to execute arbitrary code via the url_need_login function.
- CVE-2026-90689High
A security flaw has been discovered in Tenda W20E 15.11.0.61068_1546_841_CN_TDC in the formDelWebAuthWhiteUser function. Manipulation of the webAuthWhiteUserIndex argument results in a stack-based buffer overflow. The attack can be initiated remotely.
- CVE-2026-90688Medium
In Tenda W20E 15.11.0.61068_1546_841_CN_TDC, the formIPMacBindAdd function of the HTTP Handler component mishandles the IPMacBindRule argument, leading to a stack-based buffer overflow. The attack can be launched remotely.
- CVE-2026-19824High
A stack-based buffer overflow vulnerability was identified in Tenda W20E 15.11.0.6(1068_1546_841)_CN_TDC in the ipMacBindListStore function of /goform/addIpMacBind. Manipulating the IPMacBindRule argument can lead to buffer overflow. The attack can be executed remotely, and the exploit is publicly available.
- CVE-2026-19823High
A stack-based buffer overflow vulnerability was discovered in Tenda W20E 15.11.0.6(1068_1546_841)_CN_TDC in the formQOSRuleDel function of /goform/delQos. Manipulating the qosIndex argument results in buffer overflow. The attack can be executed remotely, and the exploit is publicly available.
- CVE-2026-36823High
A buffer overflow vulnerability was discovered in the webAuthUserInfo parameter of the formAddWebAuthUser function in Tenda W20E router version 15.11.0.6. Attackers can cause a Denial of Service (DoS) via a crafted HTTP request.
- CVE-2026-36822High
A buffer overflow vulnerability was discovered in the macAddr parameter of the formDelStaState function in Tenda W20E router version 15.11.0.6. Attackers can cause a Denial of Service (DoS) via a crafted HTTP request.
- CVE-2026-36821High
A buffer overflow vulnerability was discovered in the picCropName parameter of the formCropAndSetWewifiPic function in Tenda W20E router version 15.11.0.6. Attackers can cause a Denial of Service (DoS) via a crafted HTTP request.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS