What is CVE-2022-40866?

CVE-2022-40866 is a critical-severity vulnerability in Tenda W20e, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-09-23.

How severe is CVE-2022-40866?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Tenda W20e

CVE-2022-40866

Tenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formSetDebugCfg with request /goform/setDebugCfg/

Vulnerability class: Buffer Overflow

EPSS: 0.010 (58.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tenda W20e
Tenda W20e_firmware — versions 15.11.0.6
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2022-40866?: CVE-2022-40866 is a critical-severity vulnerability in Tenda W20e, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-09-23.
How severe is CVE-2022-40866?: Critical severity. CVSS v3 base score is 9.8 out of 10.