AUGUST 4, 2026
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Case File

CVE-2021-21439

MEDIUM · CVSS 6.5 EPSS 0.98%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-14 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. See the original NVD description below for full technical details.

CVE
CVE-2021-21439
Severity
MEDIUM
CVSS
6.5
EPSS
0.98%

Original NVD Description

DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.26 and prior versions; 8.0.x version 8.0.13 and prior versions.

Related CVEs

Other vulnerabilities affecting the same vendor(s)