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HCL BigFix SM CVE-2025-31973

| EUVDEUVD-2025-209905 CRITICAL
2026-05-20 psirt@hcl.com GHSA-4m6q-wqc9-g2m5
9.8
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain local privileged access
  2. Exploit
    Identify vulnerable inherited base image CVE
  3. Execution
    Trigger affected system library or package
  4. Impact
    Access sensitive data or modify configuration within container scope

Vulnerability Assessment

Exploitation Conditions

Local access is required - this is not a remotely exploitable vulnerability per the AV:L CVSS vector. The attacker must already hold high privileges (PR:H) on the system or container environment. User interaction (UI:R) is also required, meaning the attack cannot be automated without a cooperating user action. The exploitable condition is the presence of unpatched vulnerabilities within the container base image layers that HCL BigFix SM is built upon. Exploitation is therefore constrained to: (1) an insider or already-compromised privileged account, (2) operating locally on the host or within the container runtime, and (3) leveraging a specific vulnerability in the inherited base image - the precise CVEs of which depend on which base image version is in use. Remote, unauthenticated exploitation is not consistent with this advisory's CVSS vector.

Impact

The CVSS base score of 4.0 (Medium) is consistent with the vector breakdown: local attack vector (AV:L), low complexity (AC:L), high privileges required (PR:H), user interaction required (UI:R), unchanged scope (S:U), and low confidentiality, integrity, and availability impact (C:L/I:L/A:L). This combination substantially limits real-world risk - an attacker would need to already operate with high privileges on the local system and require user interaction to achieve only partial impact. No EPSS score was provided in the source data, so exploitation probability cannot be quantified. KEV status is negative (not listed), and no POC has been identified. The tag 'Information Disclosure' partially conflicts with the vector's balanced low C/I/A impact, suggesting the primary concern may lean toward confidentiality. The most realistic risk scenario is not direct exploitation of this CVE but rather lateral exposure through inherited vulnerabilities in the base image - a risk multiplier rather than a standalone critical flaw. Overall, this is a low-urgency, hygiene-class finding that warrants remediation during normal patch cycles rather than emergency response.

Exploit ScenarioDerived

A local administrator or privileged user with existing elevated access to the HCL BigFix SM environment interacts with the containerized application in a way that triggers a vulnerability inherited from the outdated base image - for example, exploiting a known CVE in a bundled system library. The attacker leverages the inherited flaw to read sensitive configuration data or make limited modifications within the container's unchanged scope. No public exploit code targeting this specific advisory has been identified at the time of analysis.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – May 20, 2026

HCL BigFix Service Management (SM) ships container deployments built on outdated or insecure base images, inheriting known vulnerabilities from those upstream layers rather than introducing a discrete code-level flaw. The CVSS vector (AV:L/PR:H/UI:R) constrains real-world risk significantly: exploitation requires local access, high privileges, and user interaction, making opportunistic remote attack unlikely. The actual exploitability and impact depend entirely on which specific vulnerabilities are present in the underlying base image versions in use. No public exploit code and no CISA KEV listing exist at the time of analysis.

RemediationAI

The primary remediation is to rebuild HCL BigFix Service Management container images using current, patched base images and redeploy. HCL's advisory KB0128144 at https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0128144 should be consulted for the specific updated image versions or patch packages provided by the vendor. No exact fix version was supplied in the available data, so the patch version cannot be independently confirmed - the advisory should be treated as the authoritative source. As a compensating control pending a formal upgrade, organizations can scan running container images with a container vulnerability scanner (e.g., Trivy, Grype, Anchore) to enumerate which specific CVEs are inherited from the outdated base layer, prioritizing remediation of those with network-exposed, unauthenticated attack vectors. Restricting privileged access to the containerized environment limits the local, high-privilege exploitation path described in the CVSS vector. Implementing a container image policy that blocks deployment of images with base layers older than a defined threshold (e.g., 90 days) reduces ongoing exposure. Note that updating base images requires rebuilding and redeploying the application, which may require coordination with change management processes.

Affected VersionsENISA

BigFix Service Management (SM) 23

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Technical ContextAI · show details

The vulnerability class is an insecure software supply chain configuration practice where container base images - the OS or runtime layers upon which the application image is built - are pinned to outdated versions. These outdated base images may contain CVEs in system libraries (e.g., glibc, OpenSSL, curl) or package managers inherited at build time. No CWE identifier was assigned by NVD, though this pattern aligns broadly with CWE-1104 (Use of Unmaintained Third Party Components) or CWE-657 (Violation of Secure Design Principles). The affected product is HCL BigFix Service Management (SM), a containerized IT service management platform. No CPE strings were provided in the source data, so exact affected versions and container registry coordinates cannot be independently confirmed from this advisory alone.

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Severity Changed
Jul 24, 2026 - 10:22 NVD
MEDIUM CRITICAL
CVSS changed
Jul 24, 2026 - 10:22 NVD
4.0 (MEDIUM) 9.8 (CRITICAL)

DescriptionNVD

HCL BigFix Service Management (SM) is susceptible to a Configuration - 'Insecure Use of Base Image Version'. Using outdated or insecure base images may introduce known vulnerabilities, potentially increasing the risk of exploitation in the application environment.

Threat Intelligence Overview

EPSS Score
0.0%
Top 98% exploitable
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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