Tenable Nessus Agent 2023 Release Notes
Tenable Nessus Agent 10.4.0 (2023-04-26)

The following are new features included in Tenable Nessus Agent 10.4.0:
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Added a nessuscli command that allows you to install a Tenable Identity Exposure Secure Relay on a Tenable Nessus Agent. For more information, see Nessus CLI Agent Commands in the Nessus Agent User Guide.

The following are changed functionality and performance enhancements included in Tenable Nessus Agent 10.4.0:
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Improved agent behavior when Tenable Nessus Manager certificates age out.
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Improved the unzip functionality in the Tenable Nessus and Tenable Nessus Agent scanning engine.

Bug Fix | Defect ID |
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Added read permissions for the system tray database. | 01330613 |
Fixed an issue where an agent would stop updating after running a scan for more than 24 hours. | 01410781 |
Staggered Nessus GET certificate requests and improved the sleep time handling on failures. | 01527389, 01511266, 01528548, 01529186, 01534150 |
Tenable Nessus Agent 8.3.5 (2023-03-09)

The following are security updates included in Tenable Nessus Agent 8.3.5:
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Updated OpenSSL to version 1.1.1t.
For more information, see the Tenable Product Security Advisory.
Tenable Nessus Agent 10.3.2 (2023-03-09)

The following are changed functionality and performance enhancements included in Tenable Nessus Agent 10.3.2:
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New links to Tenable Vulnerability Management now direct to sensor.cloud.tenable.com when you use the --cloud linking parameter.

The following are security updates included in Tenable Nessus Agent 10.3.2:
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Updated OpenSSL to version 3.0.8.
For more information, see the Tenable Product Security Advisory.
Upgrade Notes
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Tenable Nessus Agents upgraded via Tenable Nessus Manager cannot upgrade to 8.2.0 and later unless Tenable Nessus Manager is already updated to 8.12.0 or later.
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New Tenable.io Domain - As a part of continuous security and scalability improvements to Tenable infrastructure, we have added a new sensor.cloud.tenable.com domain that Tenable Vulnerability Management-linked Tenable Nessus Agents communicate with.
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Starting with Tenable Nessus Agent 8.1.0, Tenable Vulnerability Management-linked Tenable Nessus Agents communicate with Tenable Vulnerability Management using sensor.cloud.tenable.com. If agents versions 8.1.0 through 10.3.1 are not able to connect to the new domain, they fall back to using cloud.tenable.com. Tenable Nessus Agent 10.3.2 and later do not fall back using the cloud.tenable.com domain.
- Recommended Action: If you use domain allow lists for firewalls, Tenable recommends adding *.cloud.tenable.com (with the wildcard character) to the allow list. This ensures communication with sensor.cloud.tenable.com and all future subdomains, reducing operational overhead. Contact your network administrator for assistance with making necessary changes to your allow list.
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- You can upgrade to the latest version of Tenable Nessus Agent from any previously supported version.
- If your upgrade path skips versions of the Tenable Nessus Agent, Tenable recommends reviewing the release notes for all skipped versions to learn about new features and bug fixes.