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

published 2025-10-16 12 mo ago modified 2026-10-08 31 d ago also EUVD-2025-34727

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

hcltech bigfix_modern_client_management 3.4

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 12 mo ago (2025-10-16)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

HCL Software BigFix Modern Client Management

Classification

Weakness

CWE-693 Protection Mechanism Failure
CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page

References

support.hcl-software.com /csm?id=kb_article&sysparm_article=KB0124513
vendor-advisory

Sources

CVE List CVE-2025-0276
NVD CVE-2025-0276

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary