CVE-2026-9226Hinoki check available

Account takeover via replayed Azure AD login token

Published Oct 6, 2026 · Updated Oct 6, 2026

Authentication bypass in Devolutions Server 2026.3.7.0 and earlier allows remote attackers to take over accounts via a replayed Azure AD token. The Azure AD external-login flow exposes a login-session token in a redirect URL and permits a captured token to be replayed. Exploitation requires Azure AD external login and access to a victim's redirect URL; the resulting session impersonates that user.

CVSS severity7.6
High
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authentication bypass in Devolutions Server 2026.3.7.0 and earlier allows remote attackers to take over accounts via a replayed Azure AD token. The Azure AD external-login flow exposes a login-session token in a redirect URL and permits a captured token to be replayed. Exploitation requires Azure AD external login and access to a victim's redirect URL; the resulting session impersonates that user.

The record

CVE
CVE-2026-9226
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
Devolutions
Product
Devolutions Server
Classifications
T1550
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 2026Record 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 <2026.3.8

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Devolutions · Devolutions Serverversion=0 <2026.3.8

Published CVSS scores

7.6DevolutionsCVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1550Use Alternate Authentication Material

Public exploit references

No public exploit references are available in this record.

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Technologies

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