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SmartIT Desktop Manager EUVDEUVD-2026-70869

| CVE-2026-85147 HIGH
Improper Access Control (CWE-284)
2026-09-04 twcert GHSA-fq5x-c72w-p2cq
8.7
CVSS 4.0 · Vendor: twcert
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Attack ChainAIDerived

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

  1. Access
    Obtain SmartIT Desktop Manager client binary
  2. Delivery
    Extract hardcoded password via static analysis
  3. Exploit
    Contact AES key-retrieval endpoint unauthenticated
  4. Execution
    Receive AES communication key
  5. Persist
    Decrypt captured client-server traffic
  6. Impact
    Access sensitive management data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

The attacker must first obtain the SmartIT Desktop Manager application binary or source to extract the hardcoded password; for any broadly distributed management-agent software this is trivial (install the client, then apply static analysis). Once the password is in hand, the network-accessible key-retrieval endpoint requires no further authentication (PR:N per CVSS 4.0). No special server configuration or non-default feature is required - the hardcoded credential is inherent to all versions. Exploitation is bounded to confidentiality: the attacker decrypts communications but cannot inject or alter them (VI:N). The attack is not useful against environments where the management channel carries no sensitive data, or where network segmentation prevents the attacker from reaching the service or capturing traffic.

Impact

The CVSS 4.0 score of 8.7 (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N) reflects a network-accessible, unauthenticated, low-complexity attack with high confidentiality impact and no integrity or availability consequence. Real-world exploitability hinges on whether the attacker can access the client binary - for broadly distributed IT-management agents this is routine, making key extraction trivial via static analysis. Once the AES key is obtained, decrypting captured network traffic requires only standard tooling. The 'Authentication Bypass' tag in the input overstates the impact class: the CVSS confirms VI:N/VA:N, meaning this is a pure confidentiality/information-disclosure scenario, not an authentication bypass that grants control. No EPSS data was provided, no KEV listing exists, and no POC has been confirmed, so active exploitation is not established. The primary practical risk is exposure of any sensitive data - including credentials or session tokens - carried within the encrypted management channel.

Exploit ScenarioDerived

An attacker downloads or copies the SmartIT Desktop Manager client binary, runs a decompiler or strings analysis to extract the embedded static password, and then contacts the product's key-retrieval service over the network - without any authentication - to obtain the AES encryption key. With the key, the attacker decrypts previously captured or real-time network traffic between the desktop manager and its server, exposing session credentials, management commands, or other sensitive operational data.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 04, 2026

Hard-coded credentials in SmartIT Desktop Manager by Lightstar expose the AES symmetric key protecting all client-server communications. Unauthenticated remote attackers who can obtain the application binary or source - typical for distributed client software - can extract a static embedded password, use it to retrieve the AES encryption key, and subsequently decrypt the product's communication channel. Reported by TWCERT; no KEV listing and no public exploit code identified at time of analysis.

RemediationAI

Consult the TWCERT advisory at https://www.twcert.org.tw/en/cp-139-11177-13ca3-2.html for the vendor-released patch; no exact fixed version was confirmed in the available input data, so 'patch available per vendor advisory' is the most specific claim supportable. As compensating controls pending patching: restrict network access to the SmartIT Desktop Manager communication port using host-based or network firewall rules so only trusted management stations can reach the service - this limits the attacker's ability to interact with the key-retrieval endpoint even if they possess the hardcoded password. Additionally, treat all traffic previously encrypted by this product as potentially compromised, and rotate any credentials or tokens that may have transited the channel. Because the AES key is derived from a hardcoded value, key rotation is not possible without a code-level fix from Lightstar.

Affected VersionsENISA

SmartIT Desktop Manager 0 ≤10

Affected Packages

euvd smartit_desktop_manager no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

SmartIT Desktop Manager is an IT remote-management product developed by Lightstar, a Taiwanese vendor. The root cause (CWE-284, Improper Access Control; more precisely CWE-798, Use of Hard-coded Credentials) is a static password baked into the application source. This password functions as a key-derivation or retrieval credential for the AES symmetric key that encrypts client-to-server communications. Because the password never changes across installations, any attacker who obtains the binary can extract it via static analysis (strings, decompilation) and then authenticate to whatever key-retrieval endpoint the product exposes. The CPE string cpe:2.3:a:lightstar:smartit_desktop_manager:*:*:*:*:*:*:*:* covers all versions with no upper bound, indicating no patched release has been narrowed in NVD.

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Severity by source

Vendor (twcert) PRIMARY 8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
vuln.today AI 7.5 HIGH

Network-accessible key-retrieval endpoint responds to hardcoded password with no auth; pure confidentiality impact, no integrity or availability effect.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (twcert).

CVSS VectorVendor: twcert

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

SmartIT Desktop Manager developed by Lightstar has a Use of Hard-coded Credentials vulnerability. Unauthenticated remote attackers can obtain a specific password from the source code, which can be used to retrieve the AES encryption key used for communication.

Executive ViewAI

Why It Matters

SmartIT Desktop Manager by Lightstar contains hard-coded credentials that expose the encryption key protecting all client-server communications, affecting every deployed instance of the application. Unauthenticated attackers who obtain the application binary can decrypt all data transmitted by any user, potentially exposing sensitive organizational information across the entire userbase. With no vendor patch available, this represents an immediate and persistent security risk requiring urgent remediation.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: Implement network segmentation to isolate SmartIT systems and restrict their communications to trusted internal networks only; establish enhanced monitoring for suspicious communications or data exfiltration; evaluate and transition to alternative desktop management solutions with modern cryptography; discontinue use of the product if not business-critical pending vendor patch release.

Threat Intelligence Overview

EPSS Score
0.2%
Top 90% exploitable
Prevalence
Low
Niche Taiwanese IT management product, limited global footprint
Social Media
2
Sightings
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 0.2%
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
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Partial

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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