CVE-2024-1900Network attack vector

Continued access via unrevoked identity-provider tokens

Published Mar 5, 2024 · Updated Nov 1, 2024

Improper session expiration in Devolutions Server 2023.3.14.0 and earlier allows remote authenticated users to retain access. The identity-provider flow leaves an issued Devolutions Server token valid after the linked Okta or Microsoft O365 account is disabled or deleted. Exploitation requires an existing federated session, and access persists only until that Server token expires.

CVSS severity6.0
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper session expiration in Devolutions Server 2023.3.14.0 and earlier allows remote authenticated users to retain access. The identity-provider flow leaves an issued Devolutions Server token valid after the linked Okta or Microsoft O365 account is disabled or deleted. Exploitation requires an existing federated session, and access persists only until that Server token expires.

The record

CVE
CVE-2024-1900
Published
Mar 5, 2024
Updated
Nov 1, 2024
Vendor
Ironman Software
Product
Devolutions Server
Classifications
CWE-613, T1550.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 2024Record 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 <=2023.3.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ironman Software · Devolutions Serverversion=0 <=2023.3.14.0

Published CVSS scores

6.0DevolutionsCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber
5.5CISA-ADPCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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