CVE-2026-21785: CWE-1021 Improper restriction of rendered UI layers or frames in HCLSoftware BigFix Remote Control Server
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.
AI Analysis
Technical Summary
This vulnerability arises from an improperly configured Content Security Policy in HCL BigFix Remote Control Server WebUI (<= 10.1.0.0442). The CSP does not strictly define directives without fallbacks, allowing attackers with high privileges and user interaction to circumvent security controls and load unauthorized content. The CVSS vector indicates network attack vector, high attack complexity, high privileges required, user interaction needed, and a scope change with low confidentiality and integrity impact but no availability impact.
Potential Impact
An attacker with high privileges and requiring user interaction could bypass the CSP restrictions to load unauthorized resources, potentially leading to limited confidentiality and integrity impacts. There is no indication of availability impact or widespread exploitation. The vulnerability could allow unauthorized content to be rendered in the WebUI, possibly facilitating further attacks or information disclosure within the scope of the affected system.
Mitigation Recommendations
No official patch or remediation is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is provided, organizations should consider restricting access to the affected versions and monitor for any updates from HCLSoftware regarding this vulnerability.
CVE-2026-21785: CWE-1021 Improper restriction of rendered UI layers or frames in HCLSoftware BigFix 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.
CVSS v3.1
Score 4.0medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from an improperly configured Content Security Policy in HCL BigFix Remote Control Server WebUI (<= 10.1.0.0442). The CSP does not strictly define directives without fallbacks, allowing attackers with high privileges and user interaction to circumvent security controls and load unauthorized content. The CVSS vector indicates network attack vector, high attack complexity, high privileges required, user interaction needed, and a scope change with low confidentiality and integrity impact but no availability impact.
Potential Impact
An attacker with high privileges and requiring user interaction could bypass the CSP restrictions to load unauthorized resources, potentially leading to limited confidentiality and integrity impacts. There is no indication of availability impact or widespread exploitation. The vulnerability could allow unauthorized content to be rendered in the WebUI, possibly facilitating further attacks or information disclosure within the scope of the affected system.
Mitigation Recommendations
No official patch or remediation is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is provided, organizations should consider restricting access to the affected versions and monitor for any updates from HCLSoftware regarding this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HCL
- Date Reserved
- 2026-01-05T16:08:02.276Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a175c27e29bf47b50eb6082
Added to database: 5/27/2026, 9:03:35 PM
Last enriched: 5/27/2026, 9:34:17 PM
Last updated: 5/29/2026, 5:50:10 PM
Views: 10
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