What is CVE-2021-36100?

CVE-2021-36100 is a medium-severity vulnerability in Otrs, classified under OS Command Injection. CVSS score: 6.4/10. Published 2022-03-21.

How severe is CVE-2021-36100?

Medium severity. CVSS v3 base score is 6.4 out of 10.

RCE in Otrs

CVE-2021-36100

Specially crafted string in OTRS system configuration can allow the execution of any system command.

Vulnerability class: Command Injection (OS Command Injection)

Published 2022-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.013 · change: -0.000

Affected products

Otrs
Otrs Itsm
Otrs Storm
Otrs Ag — versions 8.0.x, 7.0.x
Otrs Ag ((Otrs)) Community Edition — versions 6.0.1
Otrs Ag Otrsstorm — versions 7.0.x, 8.0.x, 6.0.1
Otrs Ag Systemmonitoring — versions 7.0.x, 8.0.x, 6.0.1

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

otrs.com/release-notes/otrs-security-advisory-2022-03/ (Release Notes, Vendor Advisory)
lists.debian.org/debian-lts-announce/2023/08/msg00040.html (mailing-list)

Frequently asked questions

What is CVE-2021-36100?: CVE-2021-36100 is a medium-severity vulnerability in Otrs, classified under OS Command Injection. CVSS score: 6.4/10. Published 2022-03-21.
How severe is CVE-2021-36100?: Medium severity. CVSS v3 base score is 6.4 out of 10.