How severe is CVE-2021-40350?

CVE-2021-40350 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-2021-40350 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40350?

CVE-2021-40350 affects Christiedigital Dwu850-gs Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40350?

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-2021-40350 published?

CVE-2021-40350 was published on 2021-09-01 and last updated on 2026-06-17.

CVE-2021-40350

CVE-2021-40350 is a critical-severity vulnerability in Christiedigital Dwu850-gs 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Christiedigital Dwu850-gs Firmware
Published: 2021-09-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-40350?: 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.
How severe is CVE-2021-40350?: CVE-2021-40350 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-2021-40350 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40350?: CVE-2021-40350 affects Christiedigital Dwu850-gs Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40350?: 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-2021-40350 published?: CVE-2021-40350 was published on 2021-09-01 and last updated on 2026-06-17.

References

https://securityshards.wordpress.com/2021/08/31/cve-pending-christie-dwu850-gs-authentication-bypass/

Affected products (1)

cpe:2.3:o:christiedigital:dwu850-gs_firmware:06.46:*:*:*:*:*:*:*

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