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What are the severity rating and CVSS score of CVE-2026-21809?

The vulnerability CVE-2026-21809 has a severity score of 3.9 out of 10.0, which is classified as LOW severity.

Which products and vendors are affected by CVE-2026-21809?

This vulnerability affects BigFix Quantum Risk Analyzer from HCLSoftware.

How can I mitigate or patch CVE-2026-21809?

Consult the vendor's security advisory for details and patches.

CVE-2026-21809: CVE-2026-21809 Vulnerability (LOW Severity, CVSS: 3.9)

Description

HCL BigFix Quantum Risk Analyzer has a certain validation process that provides overly descriptive error messages when it encounters malformed input which can allow an attacker to conduct more efficient reconnaissance and fine-tune automated fuzzing tools to produce valid input.

Executive Summary

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Technical Details

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Mitigations

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "3.9",
  "pubDate": "2026-08-26T22:16:23.323Z",
  "pubdate": "2026-08-26T22:16:23.323Z"
}

Sceawere

CVE-2026-21809 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Narrative and Response

Description

Executive Summary

Technical Details

Mitigations

References

Additional Metadata