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CVE-2017-16664

27
FAUCET Score

CVE-2017-16664 describes a code injection vulnerability in Open Ticket Request System (OTRS) versions 5 before 5.0.24, 4 before 4.0.26, and 3.3 before 3.3.20, specifically within the Kernel/System/Spelling.pm module. This flaw allows an authenticated remote attacker to execute arbitrary shell commands as the webserver user through URL manipulation in the agent interface. With a CVSS score of 8.8 (High), the vulnerability has a low attack complexity and no user interaction required, leading to high impacts on confidentiality, integrity, and availability. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.3.0, < 3.3.20CPE matchmatch criteria
cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.26CPE matchmatch criteria
cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
>= 5.0.0, < 5.0.24CPE matchmatch criteria
cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.49%
Probability of exploitation in next 30 days
EPSS Percentile
83.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0249 is in the 81st percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.debian.org / debian-lts-announce/2017/12/msg00015.html
Mailing ListThird Party Advisory
debian.org / security/2017/dsa-4047
Third Party Advisory
otrs.com / security-advisory-2017-07-security-update-otrs-framework
Issue TrackingPatchVendor Advisory