CVE-2017-16921

highpriority · attend · 52EPSS 0.199 · 97 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

19.9% (97th) EPSS

CVSS 9 · high

Is it mine?

57 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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

Technical severity, 0–10. One row per scoring source.

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.08.3highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimary

exploits (2)

Public proof-of-concept and weaponised exploit code.

affected products (57)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
debian debian linux= 7.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 8.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
otrs otrs= 4.0.1nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.10nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.11nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.12nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.13nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.14nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.15nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.16nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.17nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.18nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.19nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.2nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.20nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.21nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.22nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
otrs otrs= 4.0.23nvdUScpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*

showing 20 of 57

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2017-12-08modified 2026-06-17

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references (16)

External citations — patches, advisories, analysis.

scry

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