CVE-2025-3768Network attack vector

Authenticated Tor-block bypass during endpoint outage

Published Jun 5, 2025 · Updated Jun 5, 2025

Improper access control in Devolutions Server 2025.1.10.0 and earlier allows remote authenticated users to bypass Tor blocking. Devolutions has not published the request handler or validation operation that fails when its hosted endpoint cannot be reached. Exploitation requires a low-privileged account and that endpoint outage, allowing Tor-originated access despite the configured block.

CVSS severity2.3
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Devolutions Server 2025.1.10.0 and earlier allows remote authenticated users to bypass Tor blocking. Devolutions has not published the request handler or validation operation that fails when its hosted endpoint cannot be reached. Exploitation requires a low-privileged account and that endpoint outage, allowing Tor-originated access despite the configured block.

The record

CVE
CVE-2025-3768
Published
Jun 5, 2025
Updated
Jun 5, 2025
Vendor
Ironman Software
Product
Devolutions Server
Classifications
CWE-284, T1090.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2025.1.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ironman Software · Devolutions Serverversion=0 <=2025.1.10.0

Published CVSS scores

5.0CISA-ADPCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
2.3Devolutions Inc.CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1090.003Multi-hop Proxy

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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