CVE-2026-21807
HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow
CVE-2026-21807 is a low vulnerability (CVSS 3.9) in Hclsoftware Bigfix Quantum Risk Analyzer, published August 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 2nd percentile. No source names a fixed version.
- Severity
- 3.9 LowCVSS 3.1, CVE List
- Exploit chance
- 0.12%EPSS, 2nd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
Affected products
What each source reports
CVE List Score used
HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow
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.
- Record
CVE-2026-21807- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-121
- Updated
- 2026-11-02
EUVDEUVD-2026-66805
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.
- Record
EUVD-2026-66805- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fh44-2qvm-x6ww
HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening...
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.
- Record
GHSA-fh44-2qvm-x6ww- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-121
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-21807- CVSS 3.1
- 3.9 Low
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-121
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.