---
id: CVE-2025-31979
title: >-
  A File Upload Validation Bypass vulnerability has been identified in the HCL
  BigFix SM, where the application fails to properly enforce file type
  restrictions during the upload process
summary: >-
  A File Upload Validation Bypass vulnerability has been identified in the HCL
  BigFix SM, where the application fails to properly enforce file type
  restrictions during the upload process. An attacker may exploit this flaw to
  upload malicio…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-434
published: '2025-08-28'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T00:10:00.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-31979'
references:
  - url: >-
      https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0123631
    label: psirt@hcl.com
tags:
  - nvd
epss: 0.00212
epssPercentile: 0.1029
ingestedAt: '2026-09-26T00:22:39.888Z'
---

## Overview

A File Upload Validation Bypass vulnerability has been identified in the HCL BigFix SM, where the application fails to properly enforce file type restrictions during the upload process. An attacker may exploit this flaw to upload malicious or unauthorized files, such as scripts, executables, or web shells, by bypassing client-side or server-side validation mechanisms.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.