Critical severity · published Sep 18, 2026
CVE-2026-56592
HCL BigFix Service Management is affected by multiple security vulnerabilities.
9.8
CVSS
0.3%
EPSS
No
On KEV
Description
HCL BigFix Service Management is affected by an Improper Authentication validation vulnerability related to inadequate account lockouts, which could allow an unauthenticated attacker to execute sustained brute-force attacks against the login interface, resulting in unauthorized system access.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HB
HCL BigFix Service Management · HCL Software
v27 · source: vendor
BS
Bigfix Service Management · Hcltech
23; 27 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56592
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56592
Vendor Advisory
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133917
More from HCL BigFix Service Management
9.8
CVE-2026-21806
HCL BigFix Service Management was affected with Admin Session Concurrency vulnerability (CVE-2026-21806)
9.8
CVE-2026-56590
HCL BigFix Service Management is affected by multiple security vulnerabilities.
9.8
CVE-2026-67100
HCL BigFix Service Management is affected by multiple security vulnerabilities.
8.1
CVE-2026-67102
HCL BigFix Service Management is affected by multiple security vulnerabilities.
7.4
CVE-2026-67105
HCL BigFix Service Management is affected by multiple security vulnerabilities.