CVE-2021-40350

Name: CVE-2021-40350
Creator: NVD / NIST
Published: 2021-09-01T15:15:12.887+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.55%

Last modified Jun 17, 2026

CVE-2021-40350 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. webctrl.cgi.elf on Christie Digital DWU850-GS V06.46 devices allows attackers to perform any desired action via a crafted query containing an unspecified Cookie header. Authentication bypass can be achieved by including an administrative cookie that the device does not validate.. EPSS estimates a 1.55% chance of exploitation in the next 30 days.

Description

webctrl.cgi.elf on Christie Digital DWU850-GS V06.46 devices allows attackers to perform any desired action via a crafted query containing an unspecified Cookie header. Authentication bypass can be achieved by including an administrative cookie that the device does not validate.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.55%

72.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Christiedigital	Dwu850-Gs Firmware	06.46

References

https://securityshards.wordpress.com/2021/08/31/cve-pending-christie-dwu850-gs-authentication-bypass/Exploit, Third Party Advisory
https://securityshards.wordpress.com/2021/08/31/cve-pending-christie-dwu850-gs-authentication-bypass/Exploit, Third Party Advisory

Timeline

Published: Sep 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40350?

How severe is CVE-2021-40350?

CVE-2021-40350 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.55% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40350?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40350?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST