Local stack corruption via unhardened scanner binary
Published Aug 26, 2026 · Updated Aug 26, 2026
Stack-based buffer overflow in HCL BigFix Quantum Risk Analyzer 2.0.1.47 allows local users to corrupt scanner memory via unspecified input. HCL reports that the scanner binary lacks standard hardening protections but does not identify the affected function, unsafe memory operation, or attacker-controlled input. Exploitation requires high local privileges and high complexity; the published record does not establish code execution or a specific crash outcome.
Summary
What happened
Stack-based buffer overflow in HCL BigFix Quantum Risk Analyzer 2.0.1.47 allows local users to corrupt scanner memory via unspecified input. HCL reports that the scanner binary lacks standard hardening protections but does not identify the affected function, unsafe memory operation, or attacker-controlled input. Exploitation requires high local privileges and high complexity; the published record does not establish code execution or a specific crash outcome.
The record
- CVE
- CVE-2026-21807
- Published
- Aug 26, 2026
- Updated
- Aug 26, 2026
- Vendor
- HCLSoftware
- Product
- HCL BigFix Quantum Risk Analyzer
- Classifications
- CWE-121
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Aug 26, 2026CVE publishedPublication date reported by the CVE source.
- Aug 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.0.1.47
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo