VulnerabilityPublished 22 Jul 2025Updated 25 Nov 2025

CVE-2025-6741: Devolutions Server · Improper Access Control

Affects Devolutions ServerSource CVE Database V5

Not known to be exploited · CVSS 7.1 High.

Data as of 26 Oct 2026, 09:16 UTC

CVSS 4.0 base score

7.1High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
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

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: High: There is a total loss of confidentiality, resulting in all information within the Vulnerable System being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 22 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Devolutions Server	Affected =0 =2025.2.2.0	Fixed in–

AI-suggested

Organizations should immediately audit and restrict access to the secure message entry attachment feature within Devolutions Server, limiting it to only highly trusted users. Implement strict role-based access controls (RBAC) and monitor logs for unusual access patterns related to secure messages and attachments. Network segmentation and multi-factor authentication (MFA) should be enforced to reduce the risk of compromised credentials being used to exploit this vulnerability. Until official patches are released by Devolutions, consider disabling or restricting the secure message component if feasible. Conduct thorough user privilege reviews to minimize the number of users with access to sensitive features. Employ anomaly detection tools to identify potential unauthorized access attempts. Once patches become available, prioritize timely deployment after testing in controlled environments. Additionally, educate administrators and users about the risks associated with this vulnerability and the importance of safeguarding authentication credentials.

Description

CVE-2025-6741 is a high-severity vulnerability in Devolutions Server versions up to 2025.2.4.0 that involves improper access control in the secure message component. Authenticated users can exploit this flaw to steal unauthorized entries via the secure message entry attachment feature without requiring user interaction or elevated privileges. The vulnerability has a CVSS score of 7.1, indicating significant risk due to network exploitability and high impact on confidentiality. There are no known exploits in the wild yet, but the affected versions are widely used in enterprise environments for privileged access management. European organizations using Devolutions Server should prioritize patching once updates are available and implement strict access controls and monitoring around the secure message feature. Countries with strong adoption of privileged access management solutions and critical infrastructure sectors relying on Devolutions products are at higher risk.

Impact

For European organizations, the impact of CVE-2025-6741 is substantial due to the potential unauthorized disclosure of privileged credentials or sensitive configuration entries managed by Devolutions Server. Such exposure can lead to lateral movement by attackers, privilege escalation, and ultimately compromise of critical IT infrastructure. Sectors like finance, government, energy, and telecommunications that rely heavily on PAM solutions to secure administrative access are particularly at risk. The breach of confidentiality could result in regulatory penalties under GDPR if personal or sensitive data is indirectly exposed. Additionally, the trust in privileged access management systems may be undermined, increasing operational risks. Since the vulnerability requires only authenticated access, insider threats or compromised user accounts can be leveraged to exploit this flaw, increasing the attack surface. The absence of known exploits currently provides a window for proactive defense, but the risk of future exploitation remains high.

CWE-284Improper Access Control (opens in a new tab)
Pillar weaknessCWE Top 25 (2025): #19OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
Attack patterns
Embedding Scripts within Scripts (opens in a new tab)
Modification of Windows Service Configuration (opens in a new tab)
Malicious Root Certificate (opens in a new tab)
Intent Spoof (opens in a new tab)
WebView Exposure (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

devolutions.net/security/advisories/DEVO-2025-0012/ (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 2 Dec 2025, 17:50 UTC

WeaknessesCWE-284

Technical details

References

Community reviews

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