High severity7.5NVD Advisory· Published Feb 4, 2022· Updated Jun 17, 2026
CVE-2021-45989
CVE-2021-45989
Description
Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function guestWifiRuleRefresh. This vulnerability allows attackers to cause a Denial of Service (DoS) via the qosGuestUpstream and qosGuestDownstream parameters.
Affected products
5- cpe:2.3:o:tendacn:g1_firmware:15.11.0.17\(9502\)_cn:*:*:*:*:*:*:*
- cpe:2.3:o:tendacn:g3_firmware:15.11.0.17\(9502\)_cn:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
2- exchange.xforce.ibmcloud.com/vulnerabilities/218959nvdThird Party Advisory
- github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_4/4.mdnvdBroken Link
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