Low severity · published Aug 26, 2026
CVE-2026-21809
HCL BigFix Quantum Risk Analyzer is affected by generating error messages with sensitive information
3.9
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
Attack vector
Local
Complexity
High
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BQ
BigFix Quantum Risk Analyzer · HCLSoftware
2.0.1.47 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21809
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21809
support.hcl-software.com
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133289
More from BigFix Quantum Risk Analyzer
4.4
CVE-2026-21810
HCL BigFix Quantum Risk Analyzer is affected by a hardcoded external resource reference and downloading code without integrity checking
4.1
CVE-2026-21808
HCL BigFix Quantum Risk Analyzer is affected by logging sensitive information
3.9
CVE-2026-21807
HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow