Unauthorized resource loading via incomplete CSP directives
Published May 27, 2026 · Updated May 27, 2026
Content Security Policy weakness in HCL BigFix Remote Control Server 10.1.0.0442 and earlier allows attackers to load unauthorized WebUI resources. The WebUI emits a CSP that omits directives without fallback coverage, so browsers accept resource types that the policy does not constrain. Exploitation requires high-privileged network access and user interaction; the published impact is limited to low confidentiality and integrity effects.
Summary
What happened
Content Security Policy weakness in HCL BigFix Remote Control Server 10.1.0.0442 and earlier allows attackers to load unauthorized WebUI resources. The WebUI emits a CSP that omits directives without fallback coverage, so browsers accept resource types that the policy does not constrain. Exploitation requires high-privileged network access and user interaction; the published impact is limited to low confidentiality and integrity effects.
The record
- CVE
- CVE-2026-21785
- Published
- May 27, 2026
- Updated
- May 27, 2026
- Vendor
- HCLSoftware
- Product
- BigFix Remote Control Server
- Classifications
- CWE-1021
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- May 27, 2026CVE publishedPublication date reported by the CVE source.
- May 27, 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.
- Affected versionversion=<= versions 10.1.0.0442
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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