CVE-2022-40855

moderate-risk
Published 2022-09-23

Tenda W20E router V15.11.0.6 contains a stack overflow in the function formSetPortMapping with post request 'goform/setPortMapping/'. This vulnerability allows attackers to cause a Denial of Service (DoS) or Remote Code Execution (RCE) via the portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, and portMappingExternal parameters.

Do I need to act?

~
3.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Tenda

References (2)

Exploit https://github.com/CPSeek/Router-vuls/blob/main/Tenda/W20E/formSetPortMapping.md
Exploit https://github.com/CPSeek/Router-vuls/blob/main/Tenda/W20E/formSetPortMapping.md
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 6/34 · Minimal
Exposure 5/34 · Minimal