What is CVE-2022-44366?

CVE-2022-44366 is a critical-severity vulnerability in Tenda I21, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-12-02.

How severe is CVE-2022-44366?

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

Buffer overflow in Tenda I21

CVE-2022-44366

Tenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setDiagnoseInfo.

Vulnerability class: Buffer Overflow

Published 2022-12-02 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.099 (95.4th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.099 · newest: 0.099 · change: 0.000

Affected products

Tenda I21
Tenda I21 Firmware — versions 1.0.0.14(4656), 1.0.0.14\(4656\)

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/Double-q1015/CVE-vulns/blob/main/Tenda/i21/formSetDiagnoseInfo/readm… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-44366?: CVE-2022-44366 is a critical-severity vulnerability in Tenda I21, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-12-02.
How severe is CVE-2022-44366?: Critical severity. CVSS v3 base score is 9.8 out of 10.