CVE-2021-36100Network attack vector

Authenticated command execution via crafted configuration string

Published Mar 21, 2022 · Updated Sep 17, 2024

OS command injection in affected OTRS products allows remote authenticated users to execute arbitrary system commands. The vulnerable configuration path forwards a specially crafted string into operating-system command execution without neutralizing command syntax. Exploitation requires high privileges, user interaction, and a high-complexity path; successful attacks compromise the server process.

CVSS severity6.4
Medium
EPSS probability1.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in affected OTRS products allows remote authenticated users to execute arbitrary system commands. The vulnerable configuration path forwards a specially crafted string into operating-system command execution without neutralizing command syntax. Exploitation requires high privileges, user interaction, and a high-complexity path; successful attacks compromise the server process.

The record

CVE
CVE-2021-36100
Published
Mar 21, 2022
Updated
Sep 17, 2024
Vendor
OTRS AG
Product
OTRS
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0.x <=7.0.32
  2. Affected versionversion=8.0.x <=8.0.19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OTRS AG · OTRSversion=7.0.x <=7.0.32; version=8.0.x <=8.0.19
OTRS AG · ((OTRS)) Community Editionversion=6.0.1 <6.0.x*
OTRS AG · OTRS System Monitoringversion=6.0.1 <6.0.x*; version=7.0.x <=7.0.18; version=8.0.x <=8.0.8
OTRS AG · STORMversion=6.0.1 <6.0.x*; version=7.0.x <=7.0.27; version=8.0.x <=8.0.11

Published CVSS scores

6.4OTRS AGCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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