CVE-2021-40423 — HIGH (7.5)

Vulnerability Description

A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial of service. An attacker can send an HTTP request to trigger this vulnerability.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Reolink	Rlc-410W Firmware	3.0.0.136_20121102
Reolink	Rlc-410W	-

Related Weaknesses (CWE)

CWE-20

References

https://talosintelligence.com/vulnerability_reports/TALOS-2022-1432Broken LinkTechnical DescriptionThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1432ExploitTechnical DescriptionThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1432Broken LinkTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2021-40423?

CVE-2021-40423 is a vulnerability with a CVSS score of 7.5 (HIGH). A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial o...

How severe is CVE-2021-40423?

CVE-2021-40423 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-40423?

Check the references section above for vendor advisories and patch information. Affected products include: Reolink Rlc-410W Firmware, Reolink Rlc-410W.