CVE-2021-21437

Name: CVE-2021-21437
Creator: NVD / NIST
Published: 2021-03-22T09:15:12.953+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2021-21437 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Agents are able to see linked Config Items without permissions, which are defined in General Catalog. This issue affects: OTRSCIsInCustomerFrontend 7.0.15 and prior versions, ITSMConfigurationManagement 7.0.24 and prior versions. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

Description

Agents are able to see linked Config Items without permissions, which are defined in General Catalog. This issue affects: OTRSCIsInCustomerFrontend 7.0.15 and prior versions, ITSMConfigurationManagement 7.0.24 and prior versions

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.67%

47.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Otrs	Itsmconfigurationmanagement	>= 7.0.0, <= 7.0.24
Otrs	Otrscisincustomerfrontend	>= 7.0.0, <= 7.0.15

References

https://otrs.com/release-notes/otrs-security-advisory-2021-07/Release Notes, Vendor Advisory
https://otrs.com/release-notes/otrs-security-advisory-2021-07/Release Notes, Vendor Advisory

Timeline

Published: Mar 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21437?

How severe is CVE-2021-21437?

CVE-2021-21437 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21437?

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-2021-21437?

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

Scan your code now

Source: NVD / NIST