What is CVE-2021-40597?

CVE-2021-40597 is a critical-severity vulnerability in Edimax Ic-3140w, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2022-06-29.

How severe is CVE-2021-40597?

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

Vulnerability in Edimax Ic-3140w

CVE-2021-40597

The firmware of EDIMAX IC-3140W Version 3.11 is hardcoded with Administrator username and password.

Published 2022-06-29 · 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: 0.021 (80.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.021 · change: +0.001

Affected products

Edimax Ic-3140w
Edimax Ic-3140w Firmware — versions 3.11

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.edimax.com/edimax/download/download/data/edimax/global/download/ (Product, Vendor Advisory)
drive.google.com/file/d/1ZPFwAoO8tAD0zrWwVZ9W6-CUCrcM0Exm/view (Exploit, Third Party Advisory)
drive.google.com/file/d/1DZCzVULjchY0rSJBXIPr0gJM1qWCcAZ5/view (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-40597?: CVE-2021-40597 is a critical-severity vulnerability in Edimax Ic-3140w, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2022-06-29.
How severe is CVE-2021-40597?: Critical severity. CVSS v3 base score is 9.8 out of 10.