CVE-2026-2026: Improper Access Control Allows Denial of Service

Published Feb 13, 2026
·
Updated

A vulnerability has been identified where weak file permissions in the Nessus Agent directory on Windows hosts could allow unauthorized access, potentially permitting Denial of Service (DoS) attacks.

Affected Software

4 affected components
Tenable Nessus Agent
All of the following
Any of the following
Tenable Nessus Agent<11.0.4
Tenable Nessus Agent>=11.1.0<11.1.2
Microsoft Windows

Remediation

Information

Tenable has released Nessus Agent 11.0.4 and 11.1.2 to address these issues. The installation files can be obtained from the Tenable Downloads Portal ( https://www.tenable.com/downloads/nessus) .

Event History

Feb 13, 2026
CVE Published
via MITRE·04:14 PM
Data Sourced
via MITRE·04:14 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·05:16 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2026-2026?

CVE-2026-2026 is classified as a medium severity vulnerability due to its potential to cause Denial of Service.

2

How do I fix CVE-2026-2026?

To mitigate CVE-2026-2026, ensure that the file permissions in the Nessus Agent directory are properly configured to prevent unauthorized access.

3

What can attackers do with CVE-2026-2026?

Attackers exploiting CVE-2026-2026 could gain unauthorized access to the Nessus Agent directory, leading to potential Denial of Service attacks.

4

Which versions of Tenable Nessus Agent are affected by CVE-2026-2026?

CVE-2026-2026 affects all versions of the Tenable Nessus Agent that have weak file permissions.

5

What is the impact of CVE-2026-2026 on Windows hosts?

On Windows hosts, CVE-2026-2026 can lead to unauthorized access and may result in service disruptions due to Denial of Service vulnerabilities.

Contact

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