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CVE-2026-56590

9.8, critical

HCL Software HCL BigFix Service Management Unrestricted Upload of File with Dangerous Type Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
0.2% higher than 8.3% of scored CVEs
Exploitation
No public evidence
Published
18 Sept 202629 days ago

Description

HCL BigFix Service Management is affected by an Unrestricted File Upload vulnerability due to improper file validation controls, which could allow an unauthenticated attacker to upload and execute malicious payloads, resulting in a complete server compromise.

Details

Vendor
HCL Software
Product
HCL BigFix Service Management
Weakness
CWE-434 (opens in a new tab)
Status
Analyzed
Updated
14 Oct 2026
Assigner
psirt@hcl.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References 1

Advisories 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other HCL Software CVEs

Every HCL Software CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-56592 HCL BigFix Service Management is affected by an Improper Authentication validation vulnerability related to inadequate account lockouts,… EPSS 0.3% 9.8, critical
  • CVE-2026-21806 HCL BigFix Service Management is affected by an Administrative Session Concurrency vulnerability EPSS 0.2% 9.8, critical

Beyond this page

Is CVE-2026-56590 in your network?

This page tells you how dangerous CVE-2026-56590 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 16 Oct 2026, not the live upstream state.