Arbitrary file upload in Hcl Software Bigfix Service Management
CVE-2026-56590
HCL BigFix Service Management is affected by an Unrestricted File Upload vulnerability due to improper file validation controls, which could allow an unauthenticated attacker to upload and execute malicious payloads, resulting in a complete server compromise.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (9.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001
Affected products
- Hcl Software Bigfix Service Management — versions v27
- Hcltech Bigfix Service Management — versions 23, 27
Weakness classification (CWE)
References
- support.hcl-software.com/csm (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-56590?
- CVE-2026-56590 is a medium-severity vulnerability in Hcl Software Bigfix Service Management, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.4/10. Published 2026-09-18.
- How severe is CVE-2026-56590?
- Medium severity. CVSS v3 base score is 6.4 out of 10.