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Vulnerability Details :

CVE-2026-21840

Summary
Assigner-HCL
Assigner Org ID-1e47fe04-f25f-42fa-b674-36de2c5e3cfc
Published At-14 Jul, 2026 | 21:36
Updated At-15 Jul, 2026 | 12:46
Rejected At-
Credits

HCL BigFix Platform is affected by a user enumeration vulnerability

HCL BigFix Platform is affected by a user enumeration vulnerability which might allow an attacker, through careful system control and response time monitoring, to perform some level of user enumeration for the BigFix service.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:HCL
Assigner Org ID:1e47fe04-f25f-42fa-b674-36de2c5e3cfc
Published At:14 Jul, 2026 | 21:36
Updated At:15 Jul, 2026 | 12:46
Rejected At:
▼CVE Numbering Authority (CNA)
HCL BigFix Platform is affected by a user enumeration vulnerability

HCL BigFix Platform is affected by a user enumeration vulnerability which might allow an attacker, through careful system control and response time monitoring, to perform some level of user enumeration for the BigFix service.

Affected Products
Vendor
HCLSoftware
Product
HCL BigFix Platform
Default Status
unaffected
Versions
Affected
  • 10.0.0 - 10.0.15, 11.0.0 - 11.0.5
Problem Types
TypeCWE IDDescription
CWECWE-208CWE-208 Observable timing discrepancy
Type: CWE
CWE ID: CWE-208
Description: CWE-208 Observable timing discrepancy
Metrics
VersionBase scoreBase severityVector
3.13.1LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Version: 3.1
Base score: 3.1
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132093
N/A
Hyperlink: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132093
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:psirt@hcl.com
Published At:14 Jul, 2026 | 22:16
Updated At:15 Jul, 2026 | 20:08

HCL BigFix Platform is affected by a user enumeration vulnerability which might allow an attacker, through careful system control and response time monitoring, to perform some level of user enumeration for the BigFix service.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.13.1LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
N/A
Type: Secondary
Version: 3.1
Base score: 3.1
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-208Secondarypsirt@hcl.com
CWE ID: CWE-208
Type: Secondary
Source: psirt@hcl.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132093psirt@hcl.com
N/A
Hyperlink: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132093
Source: psirt@hcl.com
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

3Records found

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Matching Score-8
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Matching Score-8
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EPSS-Not Assigned
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Updated-17 Jul, 2026 | 18:17
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Insufficient Input Validation in DevOps Loop

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Action-Not Available
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Product-DevOps Loop
CWE ID-CWE-754
Improper Check for Unusual or Exceptional Conditions
CVE-2025-54499
Matching Score-4
Assigner-Mattermost, Inc.
ShareView Details
Matching Score-4
Assigner-Mattermost, Inc.
CVSS Score-3.1||LOW
EPSS-0.25% / 16.44%
||
7 Day CHG+0.01%
Published-16 Oct, 2025 | 08:17
Updated-21 Oct, 2025 | 17:58
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Insecure string comparison enables timing attacks

Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud API keys and OAuth client secrets

Action-Not Available
Vendor-Mattermost, Inc.
Product-mattermost_serverMattermost
CWE ID-CWE-208
Observable Timing Discrepancy
CVE-2022-4823
Matching Score-4
Assigner-VulDB
ShareView Details
Matching Score-4
Assigner-VulDB
CVSS Score-3.1||LOW
EPSS-0.63% / 46.14%
||
7 Day CHG~0.00%
Published-28 Dec, 2022 | 20:51
Updated-17 May, 2024 | 02:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
InSTEDD Nuntium geopoll_controller.rb timing discrepancy

A vulnerability, which was classified as problematic, was found in InSTEDD Nuntium. Affected is an unknown function of the file app/controllers/geopoll_controller.rb. The manipulation of the argument signature leads to observable timing discrepancy. It is possible to launch the attack remotely. The name of the patch is 77236f7fd71a0e2eefeea07f9866b069d612cf0d. It is recommended to apply a patch to fix this issue. VDB-217002 is the identifier assigned to this vulnerability.

Action-Not Available
Vendor-insteddInSTEDD
Product-nuntiumNuntium
CWE ID-CWE-208
Observable Timing Discrepancy
CWE ID-CWE-203
Observable Discrepancy
Details not found