CVE-2026-21809
LowCVSS 3.9Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
HCL BigFix Quantum Risk Analyzer has a validation process that provides overly descriptive error messages when encountering malformed input, which can allow an attacker to conduct more efficient reconnaissance and fine-tune automated fuzzing tools.
Risk Assessment
An attacker could use detailed errors to probe the system and prepare more precise attacks, increasing the risk of compromise.
Recommendation
Apply vendor patches or reduce error message verbosity. Monitor logs for unusual requests.
Other vulnerabilities in HCL BigFix Quantum Risk Analyzer
See all- CVE-2026-21808Medium
HCL BigFix Quantum Risk Analyzer generates highly detailed logging information by default, increasing the risk of sensitive data leakage and providing attackers with internal application logic and architectural details.
- CVE-2026-21807Low
The HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.
- CVE-2026-21810Medium
HCL BigFix Quantum Risk Analyzer is affected by a hardcoded external resource reference and a lack of binary integrity, which could allow an attacker to obtain sensitive information or modify the binary.
Original NVD description (English source)
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.