CVE-2026-2026

Improper Access Control Allows Denial of Service

Published Feb 13, 2026 CVSS 4.0 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

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) .

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Microsoft
Microsoft windows
Tenable nessus Agent
CPEs cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows
Tenable nessus Agent
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Improper Access Control Allows Denial of Service
First Time appeared Tenable
Tenable agent
Weaknesses CWE-276
CPEs cpe:2.3:a:tenable:agent:*:*:windows:*:*:*:*:*
Vendors & Products Tenable
Tenable agent
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H'}

cvssV4_0

{'score': 5.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
tenable
Published
Updated
Feb 13, 2026, 4:58 PM
Reserved
Feb 5, 2026, 9:05 PM
Status
Analyzed
Published
Feb 13, 2026, 5:16 PM
Modified
Jun 17, 2026, 10:30 AM