CVE-2020-3243

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 88.4%, top 0% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 88%
  • Public exploit code is available (Metasploit, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 88%CVSS: 9.8Exploit: Metasploit · epss top5pct · epss high · public exploitExposed: 0

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

Multiple vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data may allow a remote attacker to bypass authentication or conduct directory traversal attacks on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
94(Track)
EG Risk 94/100SSVC: Track

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
Severity98% × 45%
Exploitation88% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
88%
EPSS %ILE
100%
KEV
Not listed

Published

April 15, 2020

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Sep 19, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

ZDI-20-540 - TrendAI™ Zero Day Initiative™ (ZDI)

https://www.zerodayinitiative.com/advisories/ZDI-20-540/
generic🟡 PoC Available

Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big Data

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsd-mult-vulns-UNfpdW4E
generic

Packet Storm Security

http://packetstormsecurity.com/files/157955/Cisco-UCS-Director-Cloupia-Script-Remote-Code-Execution.html

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 2× in last 7d / 8× 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. 2026-09-17 19:22 UTCEPSS rescore
  2. 2026-09-16 14:04 UTCEPSS rescore
  3. 2026-09-11 09:32 UTCEPSS rescore
  4. 2026-09-07 15:57 UTCEPSS rescore
  5. 2026-09-06 13:44 UTCEPSS rescore
  6. 2026-09-05 15:24 UTCEPSS rescore
  7. 2026-08-30 19:14 UTCEPSS rescore
  8. 2026-08-27 14:21 UTCEPSS rescore
  9. 2026-08-21 23:45 UTCEPSS rescore
  10. 2026-08-19 17:00 UTCEPSS rescore
  11. 2026-08-17 13:43 UTCEPSS rescore
  12. 2026-08-16 02:11 UTCEPSS rescore
  13. 2026-08-12 13:47 UTCEPSS rescore
  14. 2026-07-30 16:25 UTCEPSS rescore
  15. 2026-07-25 14:15 UTCEPSS rescore
  16. 2026-07-24 14:14 UTCEPSS rescore
  17. 2026-07-23 01:52 UTCEG score recompute
  18. 2026-07-22 22:39 UTCEG score recompute
  19. 2026-07-22 14:05 UTCEPSS rescore
  20. 2026-07-20 17:04 UTCEPSS rescore
  21. 2026-07-20 17:04 UTCEPSS rescore
  22. 2026-07-13 22:27 UTCEPSS rescore
  23. 2026-07-13 22:27 UTCEPSS rescore
  24. 2026-07-06 16:25 UTCEPSS rescore
  25. 2026-07-06 16:25 UTCEPSS rescore
Show 25 more
  1. 2026-06-28 04:54 UTCEPSS rescore
  2. 2026-06-28 04:54 UTCEPSS rescore
  3. 2026-06-25 13:48 UTCEPSS rescore
  4. 2026-06-23 21:31 UTCEPSS rescore
  5. 2026-06-23 21:31 UTCEPSS rescore
  6. 2026-06-17 17:50 UTCEPSS rescore
  7. 2026-06-15 17:46 UTCEPSS rescore
  8. 2026-06-14 23:15 UTCEPSS rescore
  9. 2026-06-13 22:58 UTCEPSS rescore
  10. 2026-06-12 23:10 UTCEPSS rescore
  11. 2026-06-10 22:16 UTCEPSS rescore
  12. 2026-06-06 13:46 UTCEPSS rescore
  13. 2026-06-06 13:45 UTCEPSS rescore
  14. 2026-06-05 22:45 UTCEPSS rescore
  15. 2026-06-05 22:45 UTCEPSS rescore
  16. 2026-06-01 13:50 UTCEPSS rescore
  17. 2026-05-31 22:29 UTCEPSS rescore
  18. 2026-05-31 22:29 UTCEPSS rescore
  19. 2026-05-31 00:15 UTCEPSS rescore
  20. 2026-05-31 00:15 UTCEPSS rescore
  21. 2026-05-29 13:42 UTCEPSS rescore
  22. 2026-05-28 13:43 UTCEPSS rescore
  23. 2026-05-28 13:43 UTCEPSS rescore
  24. 2026-05-27 04:48 UTCEG score recompute
  25. 2026-05-27 04:48 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/linux/http/cisco_ucs_cloupia_script_rce✓ verified
    First seen Apr 15, 2020

    Cisco UCS Director Cloupia Script RCE

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-3243?
CVE-2020-3243 is a critical vulnerability published on April 15, 2020. Multiple vulnerabilities in the REST API of Cisco UCS Director and Cisco UCS Director Express for Big Data may allow a remote attacker to bypass authentication or conduct directory traversal attacks on an affected device. For more information about these vulnerabilities, see the Details section of…
When was CVE-2020-3243 disclosed?
CVE-2020-3243 was first published in the National Vulnerability Database on April 15, 2020, 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-2020-3243 actively exploited?
CVE-2020-3243 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88% probability of exploitation in the next 30 days, which ranks it in the top 0.2% of all scored CVEs.
What is the CVSS score of CVE-2020-3243?
CVE-2020-3243 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-3243?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-3243, 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.

Dependency Blast Radius

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