CVE-2022-40855 — CRITICAL (9.8)

Vulnerability Description

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 Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tenda	W20E Firmware	15.11.0.6
Tenda	W20E	-

Related Weaknesses (CWE)

CWE-787

References

https://github.com/CPSeek/Router-vuls/blob/main/Tenda/W20E/formSetPortMapping.mdExploitThird Party Advisory
https://github.com/CPSeek/Router-vuls/blob/main/Tenda/W20E/formSetPortMapping.mdExploitThird Party Advisory

FAQ

What is CVE-2022-40855?

CVE-2022-40855 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 (...

How severe is CVE-2022-40855?

CVE-2022-40855 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2022-40855?

Check the references section above for vendor advisories and patch information. Affected products include: Tenda W20E Firmware, Tenda W20E.