What is CVE-2026-2026?

CVE-2026-2026 is a medium-severity vulnerability in Microsoft Windows, classified under Incorrect Default Permissions. CVSS score: 6.1/10. Published 2026-02-13.

How severe is CVE-2026-2026?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Microsoft Windows

CVE-2026-2026

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.

EPSS: 0.001 (1.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H.

Affected products

Microsoft Windows
Tenable Agent — versions 11.1.0, 0
Tenable Nessus_agent

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

vulnreport@tenable.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-2026?: CVE-2026-2026 is a medium-severity vulnerability in Microsoft Windows, classified under Incorrect Default Permissions. CVSS score: 6.1/10. Published 2026-02-13.
How severe is CVE-2026-2026?: Medium severity. CVSS v3 base score is 6.1 out of 10.