CVE-2025-31979Network attack vector

Authenticated dangerous-file upload via unenforced type restrictions

Published Aug 28, 2025 · Updated Aug 28, 2025

Unrestricted file upload in HCL BigFix Service Management 23 allows remote authenticated users to upload dangerous files over the network. The upload path fails to enforce file-type restrictions, accepting scripts, executables, or web shells that validation should reject. A valid low-privilege account is required, and accepted files can expose or alter application data; public sources do not establish server-side execution.

CVSS severity5.4
Medium
EPSS probability0.21%
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 HCL BigFix Service Management 23 allows remote authenticated users to upload dangerous files over the network. The upload path fails to enforce file-type restrictions, accepting scripts, executables, or web shells that validation should reject. A valid low-privilege account is required, and accepted files can expose or alter application data; public sources do not establish server-side execution.

The record

CVE
CVE-2025-31979
Published
Aug 28, 2025
Updated
Aug 28, 2025
Vendor
HCL Software
Product
HCL BigFix Service Management
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2025Record 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=23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HCL Software · HCL BigFix Service Managementversion=23

Published CVSS scores

5.4HCL SoftwareCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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