How severe is CVE-2026-2026?

CVE-2026-2026 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.

Is CVE-2026-2026 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2026?

CVE-2026-2026 affects Tenable Nessus Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2026?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-2026 have an EU (EUVD) identifier?

Yes. CVE-2026-2026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7381.

When was CVE-2026-2026 published?

CVE-2026-2026 was published on 2026-02-13 and last updated on 2026-06-17.

CVE-2026-2026

CVE-2026-2026 is a medium-severity vulnerability in Tenable Nessus Agent with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.4
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7381
Weakness: CWE-276
Affected product: Tenable Nessus Agent
Published: 2026-02-13
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-2026?: CVE-2026-2026 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.
Is CVE-2026-2026 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2026?: CVE-2026-2026 affects Tenable Nessus Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2026?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2026 have an EU (EUVD) identifier?: Yes. CVE-2026-2026 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7381.
When was CVE-2026-2026 published?: CVE-2026-2026 was published on 2026-02-13 and last updated on 2026-06-17.

References

https://www.tenable.com/security/tns-2026-05

Affected products (1)

cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:*

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