Ac21 Firmware
CVE-2022-40067
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, function: formSetVirtualSer.
AnalysisAI
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, function: formSetVirtualSer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, function: formSetVirtualSer. Affected products include: Tenda Ac21 Firmware.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).
More in Ac21 Firmware
View allA security vulnerability has been detected in Tenda AC21 and AC23 16.03.08.16. Rated high severity (CVSS 8.9), this vuln
Tenda AC21 V16.03.08.15 is vulnerable to Buffer Overflow via function formSetMacFilterCfg. Rated high severity (CVSS 7.5
Tenda AC21 V16.03.08.15 is vulnerable to Buffer Overflow via function via set_device_name. Rated high severity (CVSS 7.5
Tenda AC21 V16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, function: fromSetWifiGusetBasic. Rated high sev
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, form_fast_setting_wifi_set. Rated high severit
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, setSchedWifi. Rated high severity (CVSS 7.5),
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, saveParentControlInfo. Rated high severity (CV
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, function: setSmartPowerManagement. Rated high
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, formSetDeviceName. Rated high severity (CVSS 7
Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via bin/httpd, function: formSetFirewallCfg. Rated high severi
]Tenda AC21 V 16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, function: fromSetSysTime. Rated high severity
Tenda AC21 V16.03.08.15 is vulnerable to Buffer Overflow via /bin/httpd, function: formSetQosBand. Rated high severity (
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
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External POC / Exploit Code
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