Is CVE-2021-21440 actively exploited?

No active exploitation of CVE-2021-21440 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-21440 be exploited remotely?

Yes. CVE-2021-21440 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-21440?

CVE-2021-21440 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2021-21440

CWE-200Published: July 26, 2021· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

Generated Support Bundles contains private S/MIME and PGP keys if containing folder is not hidden. 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 7.0.27 and prior versions; 8.0.x version 8.0.14 and prior versions.

NVD Source

Technical Analysis

CVE-2021-21440 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.