Critical severity · published May 7, 2021
CVE-2021-31757
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN
9.8
CVSS
3.3%
EPSS
No
On KEV
Description
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setVLAN allows attackers to execute arbitrary code on the system via a crafted post request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.3% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Ac11 Firmware · Tenda
through 02.03.01.104_cn · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31757
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31757
Exploit
https://github.com/Yu3H0/IoT_CVE/tree/main/Tenda/CVE_4
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