CVE-2021-40597
CWE-798Published: June 29, 2022· Updated: Jun 17, 2026
Official Description
The firmware of EDIMAX IC-3140W Version 3.11 is hardcoded with Administrator username and password.
Risk Analysis
The firmware for the EDIMAX IC-3140W camera contains hardcoded administrative credentials. This critical flaw allows any remote attacker to gain full administrative access to the device using the default username and password.
There is no public exploit known for this issue, and it is not in the CISA KEV catalog. The vulnerability is remotely exploitable with low attack complexity.
Ensure the device firmware is updated to a version that removes hardcoded credentials and change default passwords immediately.
Technical Analysis
CVE-2021-40597 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (6)
Quick Facts
Related CVEs (CWE-798)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-40597 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts