Tenable Patches High-Severity Arbitrary Code Execution in Nessus
Summary
Tenable released security updates patching a high-severity arbitrary code execution vulnerability in Nessus and Nessus Agent on Windows. Affected versions include Nessus 10.11.3 and earlier, and Nessus Agent 11.1.2 and earlier. The vulnerability, tracked as CVE-2026-33694, allows malicious actors to execute arbitrary code on compromised systems. CSIRT-ITA rates the systemic impact as Medium (64.35) and recommends updating affected products to the latest versions per Tenable's security bulletins.
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GovPing monitors Italy CSIRT Advisories for new data privacy & cybersecurity regulatory changes. Every update since tracking began is archived, classified, and available as free RSS or email alerts — 8 changes logged to date.
What changed
Tenable released patches for a high-severity arbitrary code execution vulnerability (CVE-2026-33694) affecting Nessus versions 10.11.3 and earlier and Nessus Agent versions 11.1.2 and earlier on Windows. The vulnerability allows authenticated attackers to execute arbitrary code on affected systems.
Organizations running affected Nessus or Nessus Agent installations on Windows must prioritize applying the latest security updates referenced in Tenable's bulletins (TNS-2026-12 and TNS-2026-13). Given the high severity and remote code execution capability, unpatched instances represent a significant security risk, particularly for security teams using Nessus for vulnerability scanning across enterprise networks.
What to do next
- Update Nessus and Nessus Agent to the latest versions per Tenable security bulletins
Related changes
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