CVE-2026-21785 HCL BigFix Remote Control Server WebUI is affected by a misconfigured Content Security Policy
Attackers can bypass Content Security Policy restrictions to load unauthorized resources in HCL BigFix Remote Control Server WebUI.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21785?
CVE-2026-21785 is a medium-severity vulnerability in HCLSoftware BigFix Remote Control Server, published on 27 May 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-1021
Which versions are affected by CVE-2026-21785?
How do I fix CVE-2026-21785?
No fix has been published for CVE-2026-21785 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21785 being exploited?
There is no known exploitation of CVE-2026-21785 in the wild and no public exploit code.
Sources
Also known as GHSA-6x6f-pfq2-m75m.