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HCL Hive CVE-2026-21753

| EUVDEUVD-2026-65470 MEDIUM
Use of Unmaintained Third Party Components (CWE-1104)
2026-08-25 HCL GHSA-r33r-4v49-3hrg
4.2
CVSS 3.1 · Vendor: HCL
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Severity by source

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

Agrees with vendor vector: network-reachable registry attack surface, but high complexity and required user interaction constrain exploitation; no availability impact applies.

3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
4.0 AV:N/AC:H/AT:P/PR:N/UI:A/VC:L/VI:L/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
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

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

DescriptionCVE.org

HCL Hive is affected by weak software supply chain governance, which could lead to the inclusion of vulnerable, unmaintained, or malicious third-party dependencies within the application environment.

AnalysisAI

HCL Hive's software supply chain governance weaknesses expose the application to risk from vulnerable, unmaintained, or malicious third-party dependencies incorporated into its build or runtime environment. The flaw (CWE-1104) reflects insufficient vetting of upstream components, meaning existing dependencies may carry unpatched CVEs or could serve as an introduction vector for malicious code. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires that HCL Hive's dependency resolution process be triggered - typically during application build, installation, or update - without adequate integrity controls such as checksum verification, version pinning, or registry allow-listing. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.2 score places this in the medium-low range, and the signal constellation supports treating this as a deferred-priority governance issue rather than an urgent exploit-response. … 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 Refer to HCL Software's advisory KB0133342 (https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133342) for vendor-specific guidance. … 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-2026-21753 vulnerability details – vuln.today

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