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Dfxserver EUVDEUVD-2026-44908

| CVE-2026-35147 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-07-16 HCL GHSA-36pf-7582-rqcr
8.2
CVSS 3.1 · Vendor: HCL
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Object-level authorization, IDOR prevention
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 16, 2026

Authentication bypass in HCL DFXServer allows remote unauthenticated attackers to reach specific API endpoints directly and perform unauthorized actions without valid credentials, because the application never verifies authentication status on those routes. The primary impact is high confidentiality exposure with limited integrity impact (CVSS 8.2), and the flaw was self-reported by HCL. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.

Affected VersionsENISA

DFXServer version 2.5 and below

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (HCL) PRIMARY 8.2 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Primary rating from Vendor (HCL) · only source for this CVE.

CVSS VectorVendor: HCL

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

DescriptionCVE.org

HCL DFXServer is affected by a Broken Authentication vulnerability via direct API access. The application fails to verify the user's authentication status when accessing specific API endpoints, allowing an unauthenticated attacker to interact with the APIs and perform unauthorized actions without valid credentials.

Executive ViewAI

Why It Matters

HCL DFXServer contains an authentication bypass vulnerability (CVE-2026-35147) allowing unauthenticated remote attackers to access sensitive API endpoints and retrieve confidential data. Organizations running this product face immediate exposure of sensitive information with no available vendor patch, requiring urgent network-based compensating controls.

Recommended Action

Within 24 hours, identify and inventory all HCL DFXServer instances in your environment and document their network exposure and connected data classification. Within 7 days, restrict network access to DFXServer API endpoints via firewall rules or VPN segmentation, deploy Web Application Firewall rules to monitor and block suspicious API traffic, and enable comprehensive audit logging on all instances. Within 30 days, establish communication with HCL support to confirm patch release timeline, evaluate feasibility of upgrading to a patched version when available, and assess whether alternative products should replace DFXServer to mitigate ongoing risk.

Business Impact: High
Compensating Controls

Network segmentation restricting DFXServer API endpoint access to explicitly authorized internal networks; Web Application Firewall (WAF) deployed to block and log suspicious API access patterns; enhanced audit logging and real-time monitoring of all API requests to detect unauthorized access attempts; network-based authentication enforcement through VPN or firewall authentication requirements for all API consumers.

Threat Intelligence Overview

EPSS Score
0.3%
Top 82% 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 HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
High
Technical Impact
Partial

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +41
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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