How severe is CVE-2021-40597?

CVE-2021-40597 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-40597 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40597?

CVE-2021-40597 affects Edimax Ic-3140w Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40597?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-40597 published?

CVE-2021-40597 was published on 2022-06-29 and last updated on 2026-06-17.

CVE-2021-40597

CVE-2021-40597 is a critical-severity vulnerability in Edimax Ic-3140w Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Edimax Ic-3140w Firmware
Published: 2022-06-29
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-40597?: The firmware of EDIMAX IC-3140W Version 3.11 is hardcoded with Administrator username and password.
How severe is CVE-2021-40597?: CVE-2021-40597 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-40597 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40597?: CVE-2021-40597 affects Edimax Ic-3140w Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40597?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-40597 published?: CVE-2021-40597 was published on 2022-06-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:edimax:ic-3140w_firmware:3.11:*:*:*:*:*:*:*

More vulnerabilities in Edimax Ic-3140w Firmware

CVE-2020-26762 — Critical (CVSS 9.8): A stack-based buffer-overflow exists in Edimax IP-Camera IC-3116W (v3.06) and IC-3140W (v3.07), which allows an…
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