CVE-2020-3243Public exploitNetwork attack vector

Administrative API access via unvalidated request key

Published Apr 15, 2020 · Updated Nov 15, 2024

Authentication bypass in Cisco UCS Director before 6.7.4.0 allows remote attackers to invoke REST API actions with administrative privileges. The REST API processes the user-controlled X-Cloupia-Request-Key field in authentication operations without properly validating it. No credentials or user interaction are required; a crafted network request grants administrative API access and permits arbitrary device actions.

CVSS severity9.8
Critical
EPSS probability88.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Cisco UCS Director before 6.7.4.0 allows remote attackers to invoke REST API actions with administrative privileges. The REST API processes the user-controlled X-Cloupia-Request-Key field in authentication operations without properly validating it. No credentials or user interaction are required; a crafted network request grants administrative API access and permits arbitrary device actions.

The record

CVE
CVE-2020-3243
Published
Apr 15, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco UCS Director
Classifications
CWE-20, CWE-269, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco UCS Directorversion=n/a

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8Cisco Systems, Inc.CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-269Improper Privilege Management
T1190Exploit Public-Facing Application

Public exploit references

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Technologies

Your stack

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Your stack

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