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Vulnerability Details CVE-2021-27705

Buffer Overflow in Tenda G1 and G3 routers with firmware v15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/"qosIndex "request. This occurs because the "formQOSRuleDel" function directly passes the parameter "qosIndex" to strcpy without limit.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.026
EPSS Ranking 84.7%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
Products affected by CVE-2021-27705
  • Tenda » G1 » Version: N/A
    cpe:2.3:h:tenda:g1:-
  • Tenda » G3 » Version: N/A
    cpe:2.3:h:tenda:g3:-
  • Tenda » G1 Firmware » Version: v15.11.0.17(9502)_cn
    cpe:2.3:o:tenda:g1_firmware:v15.11.0.17(9502)_cn
  • Tenda » G3 Firmware » Version: v15.11.0.17(9502)_cn
    cpe:2.3:o:tenda:g3_firmware:v15.11.0.17(9502)_cn


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