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HCL Hive CVE-2026-21758

| EUVDEUVD-2026-65471 LOW
Information Exposure (CWE-200)
2026-08-25 HCL GHSA-2cqw-h27v-9x3g
3.7
CVSS 3.1 · Vendor: HCL

Severity by source

Vendor (HCL) PRIMARY
3.7 LOW
AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
vuln.today AI
3.7 LOW

Network-accessible unauthenticated disclosure but high complexity to trigger; impact strictly limited to low confidentiality of host environment data with no integrity or availability effect.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (HCL).

CVSS VectorVendor: HCL

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

1
Analysis Generated
Aug 25, 2026 - 11:31 vuln.today

DescriptionCVE.org

HCL Hive is affected by an information disclosure vulnerability, which could lead to an attacker gathering sensitive information about the host environment.

AnalysisAI

HCL Hive exposes sensitive host environment information through a network-accessible information disclosure flaw, enabling unauthenticated remote attackers - under high attack complexity conditions - to collect reconnaissance data about the underlying system. The CVSS 3.7 (Low) score reflects both the constrained confidentiality impact and the high exploitation complexity. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
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Vulnerability AssessmentAI

Exploitation The CVSS vector (AV:N/AC:H/PR:N/UI:N) specifies that exploitation is network-accessible and requires no authentication or user interaction, but demands high attack complexity - meaning specific conditions such as a particular application state, timing constraint, or protocol configuration must be met that are non-trivial to reproduce reliably. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS score of 3.7 (Low) is internally consistent: the high attack complexity (AC:H) substantially suppresses real-world exploitability compared to a straightforward unauthenticated flaw, and the impact is limited to low confidentiality disclosure with no integrity or availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Consult the HCL Software support knowledge base article KB0133342 at https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133342 for vendor-specific patch guidance; no exact fix version has been independently confirmed from the available input data, so patch status should be treated as 'patch available per vendor advisory' pending verification. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-21758 vulnerability details – vuln.today

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