CVE-2026-21827 | BDVDB-2026-366405 Detail

HCLSoftwareConnections

Description#

HCL Connections is vulnerable to an information disclosure vulnerability which could allow a user to obtain sensitive information they are not entitled to, caused by improper handling of request data they are not entitled to, caused by improper handling of request data.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-359 Exposure of private personal information to an unauthorized actor

References#

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130164

Exploit#

No public exploit known

History#

Version 12026-08-31Record published in the CVE List.
Version 22026-09-01Most recent update recorded in the CVE List.

Published

Published: 2026-08-31
Last modified: 2026-09-01

Vendor information

Vendor: HCLSoftware
Product: Connections

All HCLSoftware vulnerabilities

Score

3.1 Low

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 15.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
7.0, 8.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

3.1 Low

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

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

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).