CVE-2025-0276 HCL BigFix Modern Client Management (MCM) is affected by an insecure Content Security Policy (CSP)

What is CVE-2025-0276?

CVE-2025-0276 is a medium-severity cross-site scripting vulnerability in HCL Software BigFix Modern Client Management, published on 16 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HCL BigFix Modern Client Management (MCM) 3.3 and earlier are vulnerable to certain insecure directives within the Content Security Policy (CSP). An attacker could trick users into performing actions by not properly restricting the sources of scripts and other content.

Weakness: CWE-80, CWE-79, CWE-693

Which versions are affected by CVE-2025-0276?

It affects 2 products.

Products include Hcltech Bigfix Mobile, Hcltech Bigfix Modern Client Management.

How do I fix CVE-2025-0276?

No fix has been published for CVE-2025-0276 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-0276 being exploited?

There is no known exploitation of CVE-2025-0276 in the wild and no public exploit code.

Other vulnerabilities in HCL Software BigFix Modern Client Management

• CVE-2021-27783 HCL BigFix Mobile / Modern Client Management is vulnerable to sensitive information exposure Medium 6.8
• CVE-2023-28014 HCL BigFix Mobile can be affected by a cross-site scripting (XSS) vulnerability Medium 6.6
• CVE-2021-27781 HCL BigFix Mobile / Modern Client Management is vulnerable to stored cross-site scripting Medium 6.6
• CVE-2025-0277 HCL BigFix Mobile is affected by an insecure Content Security Policy (CSP) Medium 6.5
• CVE-2023-28012 HCL BigFix Mobile can be affected by a command injection vulnerability Medium 5.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mchx-c3f3-4j52.