CVE-2021-39040Network attack vector

Victim code execution via unrestricted file upload

Published Apr 25, 2022 · Updated Sep 16, 2024

Unrestricted file upload in IBM Planning Analytics Workspace 2.0 allows remote authenticated users to deliver executable files to victims. IBM identifies upload validation that fails to check file type or size, but does not disclose the affected endpoint or function. An authenticated uploader must persuade a victim to open or execute the delivered file; IBM reports no direct server-side execution.

CVSS severity6.3
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in IBM Planning Analytics Workspace 2.0 allows remote authenticated users to deliver executable files to victims. IBM identifies upload validation that fails to check file type or size, but does not disclose the affected endpoint or function. An authenticated uploader must persuade a victim to open or execute the delivered file; IBM reports no direct server-side execution.

The record

CVE
CVE-2021-39040
Published
Apr 25, 2022
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Planning Analytics Workspace
Classifications
CWE-434, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Planning Analytics Workspaceversion=2.0

Published CVSS scores

6.3IBMCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N
8.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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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