MEDIUM
CVE-2018-16586
NVD-CWE-noinfoPublished: September 28, 2018· Updated: Jun 17, 2026
4.3
CVSS v3.1
Official Description
In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a logged in user opens it, the email could cause the browser to load external image or CSS resources.
Technical Analysis
CVE-2018-16586 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
https://community.otrs.com/security-advisory-2018-05-security-update-for-otrs-framework/Patch · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00033.htmlMailing List · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4317Third Party Advisory
→
https://community.otrs.com/security-advisory-2018-05-security-update-for-otrs-framework/Patch · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2018/09/msg00033.htmlMailing List · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4317Third Party Advisory
Quick Facts
CVE IDCVE-2018-16586
CVSS Score4.3 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected2 vendor(s)
PublishedSep 28, 2018
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-16586 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.