CVE-2025-11957Network attack vectorHinoki check available

Vault access via unauthorized temporary-request approval

Published Oct 22, 2025 · Updated Oct 22, 2025

Improper authorization in Devolutions Server 2025.2.12.0 and earlier allows remote authenticated users to access vaults via crafted API requests. The temporary access workflow accepts a user-controlled request identifier without enforcing that a basic user is authorized to approve it, enabling self-approval or approval of another user's request. A basic account and a pending temporary access request are required; successful exploitation exposes the vaults and entries authorized by the approved request.

CVSS severity9.0
Critical
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper authorization in Devolutions Server 2025.2.12.0 and earlier allows remote authenticated users to access vaults via crafted API requests. The temporary access workflow accepts a user-controlled request identifier without enforcing that a basic user is authorized to approve it, enabling self-approval or approval of another user's request. A basic account and a pending temporary access request are required; successful exploitation exposes the vaults and entries authorized by the approved request.

The record

CVE
CVE-2025-11957
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
Ironman Software
Product
Devolutions Server
Classifications
CWE-639
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 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 <=2025.2.12.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ironman Software · Devolutions Serverversion=0 <=2025.2.12.0

Published CVSS scores

9.0DevolutionsCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H
8.4CISA-ADPCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/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.

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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-639Authorization Bypass Through User-Controlled Key

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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