CVE-2026-21756Network attack vector

Production code introduction via incorrect privileges

Published Aug 24, 2026 · Updated Aug 24, 2026

Broken access control in HCL Hive 1.0 allows remote authenticated users to introduce unverified code into production environments. HCL has not published the affected interface or the authorization operation that incorrectly grants this production-write capability. Exploitation requires a high-privilege account over the network, and the published impact is limited to introducing code into production.

CVSS severity7.2
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in HCL Hive 1.0 allows remote authenticated users to introduce unverified code into production environments. HCL has not published the affected interface or the authorization operation that incorrectly grants this production-write capability. Exploitation requires a high-privilege account over the network, and the published impact is limited to introducing code into production.

The record

CVE
CVE-2026-21756
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
HCLSoftware
Product
HCL Hive
Classifications
CWE-266
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

HCLSoftware · HCL Hiveversion=1.0

Published CVSS scores

7.2HCLSoftwareCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment

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

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Your stack

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