CVE-2020-3240Public exploitNetwork attack vector

Authenticated root code execution via unvalidated upload path

Published Apr 15, 2020 · Updated Nov 15, 2024

Improper input validation in Cisco UCS Director before 6.7.4.0 allows remote authenticated users to execute code as root via a crafted file. The REST API's ScriptModuleAddJarPage method uses a user-supplied path in file operations without proper validation. Valid credentials and network access to the REST API are required; successful exploitation opens a remote shell with root privileges.

CVSS severity8.8
High
EPSS probability38.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Cisco UCS Director before 6.7.4.0 allows remote authenticated users to execute code as root via a crafted file. The REST API's ScriptModuleAddJarPage method uses a user-supplied path in file operations without proper validation. Valid credentials and network access to the REST API are required; successful exploitation opens a remote shell with root privileges.

The record

CVE
CVE-2020-3240
Published
Apr 15, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco UCS Director
Classifications
CWE-20, T1190
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

ClamAV · Cisco UCS Directorversion=n/a

Published CVSS scores

8.8CiscoCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8Zero Day InitiativeCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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