How severe is CVE-2025-36631?

CVE-2025-36631 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-36631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-36631?

CVE-2025-36631 affects Tenable Nessus Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-36631?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-36631 have an EU (EUVD) identifier?

Yes. CVE-2025-36631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18277.

When was CVE-2025-36631 published?

CVE-2025-36631 was published on 2025-06-13 and last updated on 2026-06-17.

CVE-2025-36631

CVE-2025-36631 is a high-severity vulnerability in Tenable Nessus Agent with a CVSS 3.x base score of 8.4. 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-269.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18277
Weakness: CWE-269
Affected product: Tenable Nessus Agent
Published: 2025-06-13
Last modified: 2026-06-17

Description

In Tenable Agent versions prior to 10.8.5 on a Windows host, it was found that a non-administrative user could overwrite arbitrary local system files with log content at SYSTEM privilege.

Frequently asked questions

What is CVE-2025-36631?: In Tenable Agent versions prior to 10.8.5 on a Windows host, it was found that a non-administrative user could overwrite arbitrary local system files with log content at SYSTEM privilege.
How severe is CVE-2025-36631?: CVE-2025-36631 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-36631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-36631?: CVE-2025-36631 affects Tenable Nessus Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-36631?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-36631 have an EU (EUVD) identifier?: Yes. CVE-2025-36631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18277.
When was CVE-2025-36631 published?: CVE-2025-36631 was published on 2025-06-13 and last updated on 2026-06-17.

References

https://www.tenable.com/security/tns-2025-11

Affected products (1)

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

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