CVE-2022-40855

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.

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

13.49% chance of exploitation in the next 30 days, 96th percentile

Published

2022-09-23

Updated

2025-05-22

Proof-of-concept exploits (1)

• CPSeek/Router-vuls/blob/main/Tenda/W20E/formSetPortMapping.md

References

• CVE Record
• NVD entry

Related

• CVE-2022-40851
• CVE-2022-40853
• CVE-2022-40854
• CVE-2022-40860
• CVE-2022-40861
• CVE-2022-40862