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Thinos 10 EUVDEUVD-2026-44744

| CVE-2026-56687 HIGH
Obsolete Feature in UI (CWE-448)
2026-07-15 dell GHSA-f966-26qc-phpg
7.8
CVSS 3.1 · Vendor: dell
View

Vulnerability Assessment

Weakness
CWE
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 15, 2026

Unauthorized access in Dell ThinOS 10 (versions prior to 2605_10.2100) stems from an obsolete UI feature (CWE-448) that a low-privileged local attacker can abuse to bypass authentication controls. With valid low-level local access to the thin-client, an attacker can leverage the leftover interface path to reach functionality or data they should not have, yielding high confidentiality, integrity, and availability impact per the CVSS 7.8 (High) rating. No public exploit identified at time of analysis; the flaw was reported by Dell and disclosed in advisory DSA-2026-300.

Affected VersionsENISA

ThinOS 10 0 <2605_10.2100

Affected Packages

euvd thinos_10 fix: 2605_10.2100

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (dell) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

CVSS VectorVendor: dell

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

Lifecycle Timeline

2
Patch available
Jul 15, 2026 - 21:18 EUVD
CVE Published
Jul 15, 2026 - 17:33 cve.org
HIGH 7.8

DescriptionCVE.org

Dell ThinOS 10, versions prior to 2605_10.2100, contain an Obsolete Feature in UI vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Unauthorized access.

Executive ViewAI

Why It Matters

Organizations using Dell ThinOS 10 thin-client endpoints (versions before 2605_10.2100) are exposed to unauthorized access through a dormant user interface component that allows local attackers to circumvent authentication safeguards. This creates a direct threat to data protection, system change management, and operational continuity across the thin-client infrastructure, with no vendor patch currently available to remediate the risk.

Recommended Action

Within 24 hours, conduct a complete asset inventory of all Dell ThinOS 10 systems, identify those running versions prior to 2605_10.2100, and review access controls for low-privileged local users on these devices. Within 7 days, implement compensating controls by disabling or restricting access to the legacy UI pathway where technically feasible, strengthening local authentication policies, and segregating vulnerable systems on a dedicated network segment. Within 30 days, monitor Dell's advisory DSA-2026-300 for patch availability and develop a phased upgrade strategy to version 2605_10.2100 or later across the entire affected thin-client estate.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Implement interim mitigations: disable or restrict access to the legacy UI feature if supported by your ThinOS deployment; restrict low-privileged user access to affected systems through access control policies; isolate vulnerable thin-clients on a dedicated network segment; monitor Dell advisory DSA-2026-300 for patch release and maintain readiness for immediate patching upon availability.

Threat Intelligence Overview

EPSS Score
0.1%
Top 99% exploitable
Data Quality
4 sources
Confidence: Medium

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 0.1%
Patch available Yes
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
Small
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
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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