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 user with admin permissions opens it, it causes deletions of arbitrary files that the OTRS web server user has write access to.
CVE-2018-16587
MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence
Score 6.5 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 6.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1.8%CVSS: 6.5Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5MEDIUMmedium confidence
- EG Risk
- 34EG Risk 34/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity65% × 45%Exploitation2% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 1.8%
- EPSS %ILE
- 77th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
September 28, 2018
Last Modified
November 21, 2024
References (12)
- cve@mitrehttps://community.otrs.com/security-advisory-2018-04-security-update-for-otrs-framework/
- cve@mitrehttps://github.com/OTRS/otrs/commit/a4a1a01f84fac7ab032570ee50b660e2ebb15c01
- cve@mitrehttps://github.com/OTRS/otrs/commit/d8cae00b0f78c2a07bb10cedb817304139395843
- cve@mitrehttps://github.com/OTRS/otrs/commit/d9db0c6a15caafda7689320ecf61777993c33711
- cve@mitrehttps://lists.debian.org/debian-lts-announce/2018/09/msg00033.html
- cve@mitrehttps://www.debian.org/security/2018/dsa-4317
- af854a3a-2127-422b-91ae-364da2661108https://community.otrs.com/security-advisory-2018-04-security-update-for-otrs-framework/
- af854a3a-2127-422b-91ae-364da2661108https://github.com/OTRS/otrs/commit/a4a1a01f84fac7ab032570ee50b660e2ebb15c01
- af854a3a-2127-422b-91ae-364da2661108https://github.com/OTRS/otrs/commit/d8cae00b0f78c2a07bb10cedb817304139395843
- af854a3a-2127-422b-91ae-364da2661108https://github.com/OTRS/otrs/commit/d9db0c6a15caafda7689320ecf61777993c33711
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2018/09/msg00033.html
- af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4317
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Related CVEs(same product + same CWE)· as of October 4, 2026
Same product
10 shownDebian:9:otrs2 · Debian:8:otrs2
Frequently asked(5)
What is CVE-2018-16587?
CVE-2018-16587 is a medium vulnerability published on September 28, 2018. 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 user with admin permissions opens it, it causes deletions of arbitrary files that the OTRS web server user has write access to.
When was CVE-2018-16587 disclosed?
CVE-2018-16587 was first published on September 28, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-16587 actively exploited?
CVE-2018-16587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.8% probability of exploitation in the next 30 days (77th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-16587?
CVE-2018-16587 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2018-16587?
A fix for CVE-2018-16587 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
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