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Vulnerability record · CVE-2017-16921 · published 8 December 2017

CVE-2017-16921: Otrs os command injection vulnerability

Otrs · Otrs

In OTRS 6.0.x up to and including 6.0.1, OTRS 5.0.x up to and including 5.0.24, and OTRS 4.0.x up to and including 4.0.26, an attacker who is logged into OTRS as an agent can manipulate form parameters (related to PGP) and execute arbitrary shell commands with the permissions of the OTRS or web server user.

8.8 CVSS 3.0 High EPSS 20% · top 2.7% CWE-78 · OS command injection
8.8CVSS 3.0 base score, v2 9.0
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In OTRS 6.0.x up to and including 6.0.1, OTRS 5.0.x up to and including 5.0.24, and OTRS 4.0.x up to and including 4.0.26, an attacker who is logged into OTRS as an agent can manipulate form parameters (related to PGP) and execute arbitrary shell commands with the permissions of the OTRS or web server user.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/162295/OTRS-6.0.1-Remote-Command-Execution.html
https://lists.debian.org/debian-lts-announce/2017/12/msg00015.html Mailing ListThird Party Advisory
https://www.debian.org/security/2017/dsa-4066 Mailing ListThird Party Advisory
https://www.exploit-db.com/exploits/43853/ ExploitThird Party AdvisoryVDB Entry
https://www.otrs.com/security-advisory-2017-09-security-update-otrs-framework/ Issue TrackingPatchVendor Advisory
http://packetstormsecurity.com/files/162295/OTRS-6.0.1-Remote-Command-Execution.html
https://lists.debian.org/debian-lts-announce/2017/12/msg00015.html Mailing ListThird Party Advisory
https://www.debian.org/security/2017/dsa-4066 Mailing ListThird Party Advisory
https://www.exploit-db.com/exploits/43853/ ExploitThird Party AdvisoryVDB Entry
https://www.otrs.com/security-advisory-2017-09-security-update-otrs-framework/ Issue TrackingPatchVendor Advisory

Track CVE-2017-16921 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2017-16921), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.