CVE-2026-21810

Local binary modification via unchecked external download

Published Aug 26, 2026 · Updated Aug 26, 2026

Missing integrity validation in HCL BigFix Quantum Risk Analyzer 2.0.1.47 allows local users with administrative privileges to modify its binary. The scanner uses a hardcoded external resource reference and downloads code without validating the downloaded binary's integrity; HCL has not disclosed the resource, download path, or validation locus. Exploitation requires administrative local access and permits binary modification; no ability to interrupt the service is established.

CVSS severity4.4
Medium
EPSS probability0.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing integrity validation in HCL BigFix Quantum Risk Analyzer 2.0.1.47 allows local users with administrative privileges to modify its binary. The scanner uses a hardcoded external resource reference and downloads code without validating the downloaded binary's integrity; HCL has not disclosed the resource, download path, or validation locus. Exploitation requires administrative local access and permits binary modification; no ability to interrupt the service is established.

The record

CVE
CVE-2026-21810
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
HCLSoftware
Product
HCL BigFix Quantum Risk Analyzer
Classifications
CWE-610, CWE-494
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record 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=2.0.1.47

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

HCLSoftware · HCL BigFix Quantum Risk Analyzerversion=2.0.1.47

Published CVSS scores

4.4HCLCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-610Externally Controlled Reference to a Resource in Another Sphere
CWE-494Download of Code Without Integrity Check

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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