CVE-2025-64171Network attack vector

Cross-namespace Secret disclosure via unchecked certificate reference

Published Nov 6, 2025 · Updated Nov 6, 2025

Missing authorization in Red Hat MARIN3R before 0.13.4 allows remote authenticated users to read Kubernetes Secrets across namespaces. The DiscoveryServiceCertificate reconciler's getIssuerCertificate method trusts the namespace in spec.signer.caSigned.secretRef and uses the operator client to fetch that Secret without requiring it to match the resource namespace. Permission to create a DiscoveryServiceCertificate in one watched namespace is sufficient, exposing TLS certificate and private-key material from namespaces the user cannot access directly.

CVSS severity8.7
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in Red Hat MARIN3R before 0.13.4 allows remote authenticated users to read Kubernetes Secrets across namespaces. The DiscoveryServiceCertificate reconciler's getIssuerCertificate method trusts the namespace in spec.signer.caSigned.secretRef and uses the operator client to fetch that Secret without requiring it to match the resource namespace. Permission to create a DiscoveryServiceCertificate in one watched namespace is sufficient, exposing TLS certificate and private-key material from namespaces the user cannot access directly.

The record

CVE
CVE-2025-64171
Published
Nov 6, 2025
Updated
Nov 6, 2025
Vendor
389 Directory Server
Product
MARIN3R
Classifications
CWE-862, T1552.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 0.13.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · MARIN3Rversion=< 0.13.4

Published CVSS scores

8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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.

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-862Missing Authorization
T1552.007Unsecured Credentials: Container API

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo