CVE-2022-40855
9.8
CRITICAL · CVSS 3.1 · EPSS 13.8% (pctl 96)
Patch early
EPSS 13.8% — above the 10% action threshold.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 13.76% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2022-09-23 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| tenda | w20e |
| tenda | w20e firmware |
References
→ the Explorer · watch your stack · NVD