Which versions of Red Hat are affected by CVE-2025-8866?

CVE-2025-8866 presents moderate security risk, a information exposure vulnerability rated CVSS 5.1. Sensitive information could be exposed to unauthorized parties.

How to fix or mitigate CVE-2025-8866?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.

Red Hat CVE-2025-8866

Q: What is the CVSS score of CVE-2025-8866?

CVE-2025-8866 has a CVSS 4.0 base score of 5.1 (Medium). CVSS vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear. EPSS exploitation probability: 0.1%.

MEDIUM

Information Exposure (CWE-200)

2025-08-11 security@yugabyte.com

Information Disclosure Red Hat

5.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.1 MEDIUM

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear

Red Hat

5.3 MEDIUM

qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:06 vuln.today

CVE Published

Aug 11, 2025 - 17:15 nvd

MEDIUM 5.1

DescriptionCVE.org

YugabyteDB Anywhere web server does not properly enforce authentication for the /metamaster/universe API endpoint. An unauthenticated attacker could exploit this flaw to obtain server networking configuration details, including private and public IP addresses and DNS records.

AnalysisAI

YugabyteDB Anywhere web server does not properly enforce authentication for the /metamaster/universe API endpoint. Rated medium severity (CVSS 5.1), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Exposure of Sensitive Information (CWE-200), which allows attackers to access sensitive data that should not be disclosed. YugabyteDB Anywhere web server does not properly enforce authentication for the /metamaster/universe API endpoint. An unauthenticated attacker could exploit this flaw to obtain server networking configuration details, including private and public IP addresses and DNS records.

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Minimize information in error messages, implement proper access controls, encrypt sensitive data at rest and in transit.