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Server CVE-2026-4927

| EUVDEUVD-2026-17927 MEDIUM
Insertion of Sensitive Information Into Sent Data (CWE-201)
2026-04-01 DEVOLUTIONS
6.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Outbound data filtering
Impact

While CVSS and EPSS scores are unavailable, the real-world risk is elevated for organizations using Devolutions Server in multi-user environments. The attack vector is network-based and requires authentication plus role-based access (PR:L or PR:H qualifiers likely apply), reducing opportunistic attack likelihood but increasing insider threat risk. The vulnerability directly undermines MFA security-a critical control-meaning successful exploitation can lead to unauthorized account access and credential theft. The narrow version range (2026.1.6 through 2026.1.11) and clear vendor advisory suggest rapid patching occurred; however, organizations running these specific versions or with accounts possessing user management privileges face moderate-to-high risk depending on their threat model. No public exploit code or active CISA KEV confirmation is noted in the input, but the sensitivity of OTP key exposure warrants immediate patching regardless of exploitation signals.

Exploit ScenarioDerived

A system administrator with legitimate user management privileges but compromised credentials is leveraged by an attacker to query the Devolutions Server API and extract OTP keys for high-privilege accounts. Using the retrieved seeds, the attacker generates valid one-time codes offline, bypassing MFA and gaining persistent access to the accounts. Alternatively, a malicious insider with user management access harvests OTP keys to enable unauthorized access to other users' resources without detection, as MFA validation can be satisfied without the account owner's knowledge.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 01, 2026

Devolutions Server versions 2026.1.6 through 2026.1.11 expose sensitive one-time password (OTP) keys in the MFA feature, allowing authenticated users with user management privileges to retrieve other users' OTP secrets via API requests. This information disclosure vulnerability enables account takeover by attackers who obtain valid credentials with user management roles, as OTP keys are sufficient to generate valid authentication codes and bypass multi-factor authentication protections.

RemediationAI

Upgrade Devolutions Server immediately to version 2026.1.12 or later, which patches the API access control vulnerability in the MFA feature. Customers unable to upgrade immediately should restrict API access and user management role assignments to trusted administrators, audit recent API logs for unauthorized OTP key retrieval, and consider forcing password resets and MFA re-enrollment for users whose OTP keys may have been exposed. For complete remediation guidance and confirmed patch versions, consult the Devolutions advisory at https://devolutions.net/security/advisories/DEVO-2026-0010.

Affected VersionsENISA

Server 2026.1.6 ≤2026.1.11

Affected Packages

euvd server 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

The vulnerability exists in Devolutions Server's MFA implementation, specifically in the API endpoint that manages user credentials and authentication factors. CWE-201 (Insertion of Sensitive Information into Sent Data) indicates that sensitive cryptographic material-OTP keys used to derive time-based one-time passwords (TOTP/HOTP)-is transmitted or exposed in responses without proper access controls. The affected product (cpe:2.3:a:devolutions:server) is a centralized credential and identity management solution; exposing OTP seeds undermines the security assumptions of multi-factor authentication by treating a secret key as readable data rather than a secret that should never be transmitted to clients. The vulnerability requires authentication and specific privilege escalation (user management role), limiting the attack surface to internal administrators or compromised management accounts.

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Severity by source

NVD PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionCVE.org

Exposure of sensitive information in the users MFA feature in Devolutions Server allows users with user management privileges to obtain other users OTP keys via an authenticated API request.

This issue affects Server: from 2026.1.6 through 2026.1.11.

Threat Intelligence Overview

EPSS Score
0.0%
Top 91% 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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
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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