CVE-2021-43974

Name: CVE-2021-43974
Creator: NVD / NIST
Published: 2022-01-11T20:15:07.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.42%

Last modified Jun 17, 2026

CVE-2021-43974 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered in SysAid ITIL 20.4.74 b10. The /enduserreg endpoint is used to register end users anonymously, but does not respect the server-side setting that determines if anonymous users are allowed to register new accounts. EPSS estimates a 1.42% chance of exploitation in the next 30 days.

Description

An issue was discovered in SysAid ITIL 20.4.74 b10. The /enduserreg endpoint is used to register end users anonymously, but does not respect the server-side setting that determines if anonymous users are allowed to register new accounts. Configuring the server-side setting to disable anonymous user registration only hides the client-side registration form. An attacker can still post registration data to create new accounts without prior authentication.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.42%

69.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions	Update
Sysaid	Itil	20.4.74	B10

References

https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0002.mdBroken Link, Third Party Advisory
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2022-0001.mdExploit, Third Party Advisory
https://www.sysaid.com/it-service-management-software/incident-managementVendor Advisory
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0002.mdBroken Link, Third Party Advisory
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2022-0001.mdExploit, Third Party Advisory
https://www.sysaid.com/it-service-management-software/incident-managementVendor Advisory

Timeline

Published: Jan 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43974?

How severe is CVE-2021-43974?

CVE-2021-43974 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43974?

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-2021-43974?

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

Scan your code now

Source: NVD / NIST