CVE-2025-23389Network attack vector

User impersonation via unvalidated SAML binding cookies

Published Apr 11, 2025 · Updated Feb 26, 2026

Improper access control in affected SUSE Rancher releases allows remote authenticated users to impersonate other Rancher users. Rancher trusts attacker-controlled saml_Rancher_UserID and saml_Rancher_Action cookies when binding the asserted SAML principal to an account. A SAML provider and an initial or newly unlinked SAML login are required; selecting an administrator account grants its privileges.

CVSS severity8.4
High
EPSS probability0.47%
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 affected SUSE Rancher releases allows remote authenticated users to impersonate other Rancher users. Rancher trusts attacker-controlled saml_Rancher_UserID and saml_Rancher_Action cookies when binding the asserted SAML principal to an account. A SAML provider and an initial or newly unlinked SAML login are required; selecting an administrator account grants its privileges.

The record

CVE
CVE-2025-23389
Published
Apr 11, 2025
Updated
Feb 26, 2026
Vendor
NeuVector
Product
Rancher
Classifications
CWE-284, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=2.10.0 <2.10.3
  2. Affected versionversion=2.8.0 <2.8.13
  3. Affected versionversion=2.9.0 <2.9.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NeuVector · Rancherversion=2.10.0 <2.10.3; version=2.8.0 <2.8.13; version=2.9.0 <2.9.7

Published CVSS scores

8.4SUSECVSS: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.

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-284Improper Access Control
T1078Valid Accounts

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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