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[R1] Nessus Agent Version 10.8.5 Fixes Multiple Vulnerabilities

High
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Synopsis

1. 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.  - CVE-2025-36631

2. In Tenable Agent versions prior to 10.8.5 on a Windows host, it was found that a non-administrative user could execute code with SYSTEM privilege. - CVE-2025-36632

3. In Tenable Agent versions prior to 10.8.5 on a Windows host, it was found that a non-administrative user could arbitrarily delete local system files with SYSTEM privilege, potentially leading to local privilege escalation. - CVE-2025-36633

Solution

Tenable has released Agent 10.8.5 to address these issues. The installation files can be obtained from the Tenable Downloads Portal: https://www.tenable.com/downloads/nessus-agents

This page contains information regarding security vulnerabilities that may impact Tenable's products. This may include issues specific to our software, or due to the use of third-party libraries within our software. Tenable strongly encourages users to ensure that they upgrade or apply relevant patches in a timely manner.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Risk Information

Tenable Advisory ID: TNS-2025-11
Risk Factor: High
Credit:
Rishad Sheikh - CVE-2025-36631
Julian Härig with TÜV Rheinland - CVE-2025-36633
CVSSv3 Base / Temporal Score:
8.4 / 7.6 (CVE-2025-36631)
7.8 / 7.0 (CVE-2025-36632)
8.8 / 7.9 (CVE-2025-36633)
CVSSv3 Vector:
AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H/E:P/RL:O/RC:C (CVE-2025-36631)
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C (CVE-2025-36632)
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C (CVE-2025-36633)

Affected Products

Nessus Agent 10.8.4 and earlier

Disclosure Timeline

2025-05-10 - Report received by Tenable (CVE-2025-36631)
2025-05-28 - Report confirmed as valid
2025-05-28 - CVE ID requested / CVSS scoring calculated
2025-06-12 - Nessus Agent 10.8.5 released
2025-06-03 - Report received by Tenable (CVE-2025-36633)
2025-06-07 - Report confirmed as valid
2025-06-07 - CVE ID requested / CVSS scoring calculated
2025-06-12 - Nessus Agent 10.8.5 released

Advisory Timeline

2025-06-12 - [R1] Initial Release
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