CVE-2026-21840: CWE-208 Observable timing discrepancy in HCLSoftware HCL BigFix Platform
HCL BigFix Platform has a user enumeration vulnerability due to observable timing discrepancies. An attacker could potentially infer valid usernames by analyzing response times from the BigFix service. The vulnerability has a low severity score and does not impact confidentiality, integrity, or availability beyond limited information disclosure.
AI Analysis
Technical Summary
CVE-2026-21840 describes a user enumeration vulnerability in HCL BigFix Platform where timing differences in system responses may allow an attacker to distinguish valid users. This is classified under CWE-208 (Observable Timing Discrepancy). The CVSS score is 3.1 (low), indicating limited impact. No official remediation or patch information is currently available, and no known exploits are reported in the wild.
Potential Impact
The vulnerability allows limited information disclosure by enabling an attacker to enumerate valid users through timing analysis. There is no direct impact on system integrity, availability, or broader confidentiality beyond user enumeration.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider monitoring for unusual enumeration attempts and applying any recommended vendor mitigations once published.
CVE-2026-21840: CWE-208 Observable timing discrepancy in HCLSoftware HCL BigFix Platform
Description
HCL BigFix Platform has a user enumeration vulnerability due to observable timing discrepancies. An attacker could potentially infer valid usernames by analyzing response times from the BigFix service. The vulnerability has a low severity score and does not impact confidentiality, integrity, or availability beyond limited information disclosure.
CVSS v3.1
Score 3.1low
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-21840 describes a user enumeration vulnerability in HCL BigFix Platform where timing differences in system responses may allow an attacker to distinguish valid users. This is classified under CWE-208 (Observable Timing Discrepancy). The CVSS score is 3.1 (low), indicating limited impact. No official remediation or patch information is currently available, and no known exploits are reported in the wild.
Potential Impact
The vulnerability allows limited information disclosure by enabling an attacker to enumerate valid users through timing analysis. There is no direct impact on system integrity, availability, or broader confidentiality beyond user enumeration.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider monitoring for unusual enumeration attempts and applying any recommended vendor mitigations once published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HCL
- Date Reserved
- 2026-01-05T16:08:25.001Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a56b22968715ace4347ce1e
Added to database: 07/14/2026, 22:03:21 UTC
Last enriched: 07/14/2026, 22:19:43 UTC
Last updated: 07/15/2026, 00:12:12 UTC
Views: 7
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