What is the CVSS score of EUVD-2025-18396?

EUVD-2025-18396 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Nessus Agent are affected by EUVD-2025-18396?

Tenable Agent for Windows versions prior to 10.8.5 contains a local privilege escalation vulnerability (CVSS 7.8) allowing standard users to execute arbitrary code with SYSTEM privileges, posing a…. A patch is available.

How to fix or mitigate EUVD-2025-18396?

Within 24 hours: Identify all Windows systems running Tenable Agent versions prior to 10.8.5 using your asset management and patch management tools; communicate patch timeline to system owners. Within 7 days: Deploy Tenable Agent version 10.8.5 or later to all affected Windows systems using your patch management solution (WSUS, Intune, third-party patch tools, or manual distribution); prioritize multi-user systems and shared administrative workstations. Within 30 days: Verify 100% patching completion through vulnerability scanning or Tenable Nessus scans; document remediation in change management and audit logs.

Nessus Agent EUVD-2025-18396

| CVE-2025-36632 HIGH

Incorrect Default Permissions (CWE-276)

2025-06-16 vulnreport@tenable.com

Microsoft Information Disclosure Nessus Agent Windows

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:38 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

10.8.5

EUVD ID Assigned

Mar 14, 2026 - 21:59 euvd

EUVD-2025-18396

Analysis Generated

Mar 14, 2026 - 21:59 vuln.today

CVE Published

Jun 16, 2025 - 14:15 nvd

HIGH 7.8

DescriptionCVE.org

In Tenable Agent versions prior to 10.8.5 on a Windows host, it was found that a non-administrative user could execute code with SYSTEM privilege.

AnalysisAI

Privilege escalation vulnerability in Tenable Agent for Windows (versions prior to 10.8.5) that allows a non-administrative local user to execute arbitrary code with SYSTEM-level privileges. This is a local privilege escalation (LPE) vulnerability with high severity (CVSS 7.8) requiring only local access and low complexity exploitation. The vulnerability represents a critical risk in multi-user Windows environments where standard users could gain complete system control.

Technical ContextAI

The vulnerability exists in Tenable Agent, a endpoint detection and response (EDR) / vulnerability assessment agent deployed on Windows systems. The root cause is classified under CWE-276 (Incorrect Default Permissions), indicating improper access controls on a critical system resource or service. Tenable Agent typically runs with elevated privileges to perform system-level vulnerability scanning and monitoring. The vulnerability allows privilege escalation from a standard user context to SYSTEM, suggesting either: (1) an insecure service running as SYSTEM that can be exploited by unprivileged users, (2) improper file/registry permissions on agent components, or (3) insecure inter-process communication (IPC) mechanisms. The Local Attack Vector (AV:L) and Low Attack Complexity (AC:L) indicate the flaw is likely trivial to exploit once a user has local access—no special conditions or sophisticated techniques required. The vulnerability affects Windows deployments specifically, as the advisory explicitly mentions 'Windows host.'

RemediationAI

Immediate actions: (1) Upgrade Tenable Agent to version 10.8.5 or later on all Windows systems. Tenable has provided a patched version; deployment should be prioritized. (2) For systems that cannot be immediately patched, implement compensating controls: restrict local user access to systems running vulnerable Tenable Agent; disable or suspend non-essential local user accounts; use OS-level privilege policies to limit local user capability. (3) Monitor for exploitation attempts: audit local code execution events, system-level process spawning, and unexpected SYSTEM-context processes originating from standard user sessions. (4) Review Tenable advisories and security bulletins for detailed patch notes and deployment instructions. (5) Test patches in a non-production environment before widespread rollout to ensure compatibility with monitoring requirements. Recommend mandatory upgrade timeline: critical systems within 7 days, all systems within 30 days.