What’s Vulnerable › Vulnerabilities

CVE-2021-21436: Agent is able to link customer's Config Items without permission

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-08 · updated 2026-06-17
• Weakness: CWE-264

Description

Agents are able to see and link Config Items without permissions, which are defined in General Catalog. This issue affects: OTRS AG OTRSCIsInCustomerFrontend 7.0.x version 7.0.14 and prior versions.

Affected products

• OTRS AG OTRSCIsInCustomerFrontend: from 7.0.0 through 7.0.14

References

• https://otrs.com/release-notes/otrs-security-advisory-2021-04/
• https://otrs.com/release-notes/otrs-security-advisory-2021-04/

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