What is CVE-2021-40407?

CVE-2021-40407 is a critical-severity vulnerability in N/a, classified under OS Command Injection. CVSS score: 9.1/10. Published 2022-01-28.

How severe is CVE-2021-40407?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2021-40407 known to be exploited?

Yes. CVE-2021-40407 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-18), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

RCE in N/a

CVE-2021-40407

An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter pro…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.253 (96.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-78 — OS Command Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2024-12-18. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-01-08.

Required action: The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

Public proof-of-concept exploits

References

talosintelligence.com/vulnerability_reports/TALOS-2021-1424 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-40407?: CVE-2021-40407 is a critical-severity vulnerability in N/a, classified under OS Command Injection. CVSS score: 9.1/10. Published 2022-01-28.
How severe is CVE-2021-40407?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2021-40407 known to be exploited?: Yes. CVE-2021-40407 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-18), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.