CVE-2026-21785 | BDVDB-2026-335352 Detail

HCLSoftwareBigFix Remote Control Server

Description#

A misconfigured Content Security Policy (CSP) in HCL BigFix Remote Control Server WebUI (versions 10.1.0.0442 and earlier) fails to define directives without fallbacks, allowing attackers to bypass intended security restrictions and load unauthorized resources.

Impact#

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

Weaknesses#

CWE-1021 Improper restriction of rendered UI layers or frames

References#

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130581

Exploit#

No public exploit known

History#

Version 12026-05-27Record published in the CVE List.
Version 22026-05-28Most recent update recorded in the CVE List.

Published

Published: 2026-05-27
Last modified: 2026-05-28

Vendor information

Vendor: HCLSoftware
Product: BigFix Remote Control Server

All HCLSoftware vulnerabilities

Score

4.0 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 4.1.

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
<= versions 10.1.0.0442
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

4.0 Medium

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

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

CVSS v3.0

Not available

CVSS v2

Not available

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