HOMEVULNERABILITIESCVE-2021-43974
MEDIUM

CVE-2021-43974

CWE-306Published: January 11, 2022· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-43974 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Vendors & Products

sysaid1 product(s)
itil
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0002.md
ADVISORYhttps://github.com/atredispartners/advisories/blob/master/ATREDIS-2022-0001.md
ADVISORYhttps://www.sysaid.com/it-service-management-software/incident-management
ADVISORYhttps://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0002.md
ADVISORYhttps://github.com/atredispartners/advisories/blob/master/ATREDIS-2022-0001.md
ADVISORYhttps://www.sysaid.com/it-service-management-software/incident-management

All References (6)

→
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

Quick Facts

CVE IDCVE-2021-43974
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-306
CISA KEVNo
Affected1 vendor(s)
PublishedJan 11, 2022

Related CVEs (CWE-306)

CVE-2023-48426
10.0
CVE-2025-69425
10.0
CVE-2023-41918
10.0
CVE-2026-20223
10.0
CVE-2026-10577
10.0
CVE-2026-35301
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-43974 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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