CVE-2026-21809

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

26/08/2026

Last modified:

26/08/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L CVSS v3.1 Severity and Metrics:

Base Score: 3.90 LOW
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): Low

Base Score 3.x

3.90

Severity 3.x

LOW

References to Advisories, Solutions, and Tools

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133289