Nessus Agent 2023 Release Notes

Nessus Agent 8.3.5 (2023-03-09)

Security Updates

The following are security updates included in Nessus Agent 8.3.5:

Updated OpenSSL to version 1.1.1t.

For more information, see the Tenable Product Security Advisory.

Changed Functionality and Performance Enhancements

The following are changed functionality and performance enhancements included in Agent 10.3.2:

New links to Tenable.io now direct to sensor.cloud.tenable.com when you use the --cloud linking parameter.

Security Updates

The following are security updates included in Nessus Agent 10.3.2:

Updated OpenSSL to version 3.0.8.

For more information, see the Tenable Product Security Advisory.

Nessus Agents upgraded via Nessus Manager cannot upgrade to 8.2.0 and later unless Nessus Manager is already updated to 8.12.0 or later.
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.io-linked agents communicate with.
- Starting with Agent 8.1.0, Tenable.io-linked agents communicate with Tenable.io 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. Agents 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.
You can upgrade to the latest version of Nessus Agent from any previously supported version.
If your upgrade path skips versions of the Agent, Tenable recommends reviewing the release notes for all skipped versions to learn about new features and bug fixes.