CVE-2023-0587

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2023-02-01. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.1
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 60%
CISA-KEV: Not listedEPSS: 60%CVSS: 9.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A file upload vulnerability in exists in Trend Micro Apex One server build 11110. Using a malformed Content-Length header in an HTTP PUT message sent to URL /officescan/console/html/cgi/fcgiOfcDDA.exe, an unauthenticated remote attacker can upload arbitrary files to the SampleSubmission directory (i.e., \PCCSRV\TEMP\SampleSubmission) on the server. The attacker can upload a large number of large files to fill up the file system on which the Apex One server is installed.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
82(Attend)
EG Risk 82/100SSVC: Attend

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 computed
Severity91% × 45%
Exploitation65% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
99.0%
KEV
Not listed

Published

February 1, 2023

Last Modified

March 27, 2025

Advisory Details (1)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

Trend Micro Apex One fcgiOfcDDA.exe File Upload Vulnerability - Research Advisory | Tenable®

https://www.tenable.com/security/research/tra-2023-5

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-24 14:15 UTCEPSS rescore
  2. 2026-07-23 02:17 UTCEG score recompute
  3. 2026-07-22 23:05 UTCEG score recompute
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  59. 2026-05-26 07:17 UTCEPSS rescore
  60. 2026-05-25 07:37 UTCEG score recompute
  61. 2026-05-25 07:37 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2023-0587?
CVE-2023-0587 is a critical vulnerability published on February 1, 2023. A file upload vulnerability in exists in Trend Micro Apex One server build 11110. Using a malformed Content-Length header in an HTTP PUT message sent to URL /officescan/console/html/cgi/fcgiOfcDDA.exe, an unauthenticated remote attacker can upload arbitrary files to the SampleSubmission directory…
When was CVE-2023-0587 disclosed?
CVE-2023-0587 was first published in the National Vulnerability Database on February 1, 2023, with the most recent update on March 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-0587 actively exploited?
CVE-2023-0587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-0587?
CVE-2023-0587 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2023-0587?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-0587, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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