Tenable Patches High-Severity Arbitrary Code Execution Vulnerability in Nessus
Summary
Italy's National Cybersecurity Agency (ACN) published Alert AL03/260424/CSIRT-ITA on 24 April 2026, disclosing a high-severity vulnerability (CVE-2026-33694) in Tenable Nessus (version 10.11.3 and earlier on Windows) and Nessus Agent (version 11.1.2 and earlier on Windows). The flaw, rated with a CVSS impact score of 64.35, could allow an authenticated attacker to execute arbitrary code on affected systems. ACN recommends updating to patched versions as indicated in Tenable's security bulletins TNS-2026-12 and TNS-2026-13.
“Tale vulnerabilità, qualora sfruttata, potrebbe consentire ad un utente malintenzionato di eseguire codice arbitrario sui sistemi interessati.”
Organizations running Nessus or Nessus Agent on Windows should prioritize patching to the latest versions referenced in Tenable's TNS-2026-12 and TNS-2026-13 bulletins. As Nessus is a vulnerability scanner often used by security teams to assess their own infrastructure, its compromise could enable lateral movement across an enterprise network — making this a higher-priority patch than a typical third-party application update.
About this source
GovPing monitors Italy ACN News alt for new data privacy & cybersecurity regulatory changes. Every update since tracking began is archived, classified, and available as free RSS or email alerts — 7 changes logged to date.
What changed
ACN Italy published a security alert disclosing a high-severity arbitrary code execution vulnerability in Tenable Nessus and Nessus Agent for Windows. The vulnerability affects Nessus versions 10.11.3 and earlier and Nessus Agent versions 11.1.2 and earlier. An attacker could exploit this flaw to execute arbitrary code on affected systems. The alert references CVE-2026-33694 and links to Tenable's security bulletins TNS-2026-12 and TNS-2026-13. Organizations using Nessus or Nessus Agent on Windows should update to the latest versions immediately to remediate the risk.
What to do next
- Update Nessus to version 10.11.4 or later (Windows)
- Update Nessus Agent to version 11.1.3 or later (Windows)
Archived snapshot
Apr 24, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Tenable: sanata vulnerabilità in Nessus
**
Alert**
AL03/260424/CSIRT-ITA
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Sintesi
Tenable ha rilasciato aggiornamenti di sicurezza che risolvono una vulnerabilità con gravità “alta” nel noto vulnerability scanner Nessus. Tale vulnerabilità, qualora sfruttata, potrebbe consentire ad un utente malintenzionato di eseguire codice arbitrario sui sistemi interessati.
Tipologia
Arbitrary Code Execution
Prodotti e/o versioni affette
Nessus
versione 10.11.3 e precedenti (Windows)
Nessus Agentversione 11.1.2 e precedenti (Windows)
Azioni di mitigazione
In linea con le dichiarazioni del vendor, si raccomanda di aggiornare i prodotti vulnerabili seguendo le indicazioni dei bollettini di sicurezza riportati nella sezione Riferimenti.
CVE (1)
Cerca:
| CVE | POC | EXPLOITATION |
| --- | --- | --- |
| CVE-2026-33694 | - | - |
Riferimenti (2)
Change log
| Versione | Note | Data |
|---|---|---|
| 1.0 | Pubblicato il 24-04-2026 | 24/04/2026 |
Impatto sistemico
Medio (64.35)
Argomenti
Data pubblicazione
24/04/26 ore 14:48
Data Ultimo Aggiornamento
24/04/26 ore 14:48
Parties
Related changes
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