In Tenable Nessus 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.

In Nessus versions prior to 10.8.4, a non-authenticated attacker could alter Nessus logging entries by manipulating http requests to the application.

When installing Nessus to a non-default location on a Windows host, Nessus versions prior to 10.8.4 did not enforce secure permissions for sub-directories. This could allow for local privilege escalation if users had not secured the directories in the non-default installation location. - CVE-2025-24914

A race condition vulnerability exists where an authenticated, local attacker on a Windows Nessus host could modify installation parameters at installation time, which could lead to the execution of arbitrary code on the Nessus host

When installing Nessus to a directory outside of the default location on a Windows host, Nessus versions prior to 10.7.3 did not enforce secure permissions for sub-directories. This could allow for local privilege escalation if users had not secured the directories in the non-default installation location.

As a part of Tenable’s vulnerability disclosure program, a vulnerability in a Nessus plugin was identified and reported. This vulnerability could allow a malicious actor with sufficient permissions on a scan target to place a binary in a specific filesystem location, and abuse the impacted plugin in order to escalate privileges.

A SQL injection vulnerability exists where an authenticated, low-privileged remote attacker could potentially alter scan DB content.

A stored XSS vulnerability exists where an authenticated, remote attacker with administrator privileges on the Nessus application could alter Nessus proxy settings, which could lead to the execution of remote arbitrary scripts.

An arbitrary file write vulnerability exists where an authenticated, remote attacker with administrator privileges on the Nessus application could alter Nessus Rules variables to overwrite arbitrary files on the remote host, which could lead to a denial of service condition.

Under certain conditions, a low privileged attacker could load a specially crafted file during installation or upgrade to escalate privileges on Windows and Linux hosts.

An improper authorization vulnerability exists where an authenticated, low privileged remote attacker could view a list of all the users available in the application.

An arbitrary file write vulnerability exists where an authenticated, remote attacker with administrator privileges could alter logging variables to overwrite arbitrary files on the remote host with log data, which could lead to a denial of service condition.

A pass-back vulnerability exists where an authenticated, remote attacker with administrator privileges could uncover stored SMTP credentials within the Nessus application.This issue affects Nessus: before 10.6.0.

Vulnerability in Tenable Tenable.Io, Tenable Nessus, Tenable Security Center.This issue affects Tenable.Io: before Plugin Feed ID #202306261202 ; Nessus: before Plugin Feed ID #202306261202 ; Security Center: before Plugin Feed ID #202306261202 . This vulnerability could allow a malicious actor with sufficient permissions on a scan target to place a binary in a specific filesystem location, and abuse the impacted plugin in order to escalate privileges.

A privilege escalation vulnerability was identified in Nessus versions 8.10.1 through 8.15.8 and 10.0.0 through 10.4.1. An authenticated attacker could potentially execute a specially crafted file to obtain root or NT AUTHORITY / SYSTEM privileges on the Nessus host.

An authenticated attacker could read arbitrary files from the underlying operating system of the scanner using a custom crafted compliance audit file without providing any valid SSH credentials.

An authenticated attacker could create an audit file that bypasses PowerShell cmdlet checks and executes commands with administrator privileges.

Nessus versions 8.15.2 and earlier were found to contain a local privilege escalation vulnerability which could allow an authenticated, local administrator to run specific executables on the Nessus Agent host. Tenable has included a fix for this issue in Nessus 10.0.0. The installation files can be obtained from the Tenable Downloads Portal (https://www.tenable.com/downloads/nessus).

Nessus versions 8.13.2 and earlier were found to contain a privilege escalation vulnerability which could allow a Nessus administrator user to upload a specially crafted file that could lead to gaining administrator privileges on the Nessus host.

Content Injection vulnerability in Tenable Nessus prior to 8.5.0 may allow an authenticated, local attacker to exploit this vulnerability by convincing another targeted Nessus user to view a malicious URL and use Nessus to send fraudulent messages. Successful exploitation could allow the authenticated adversary to inject arbitrary text into the feed status, which will remain saved post session expiration.

When installing Nessus to a directory outside of the default location, Nessus versions prior to 7.0.3 did not enforce secure permissions for sub-directories. This could allow for local privilege escalation if users had not secured the directories in the installation location.

When linking a Nessus scanner or agent to Tenable.io or other manager, Nessus 6.x before 6.11 does not verify the manager's TLS certificate when making the initial outgoing connection. This could allow man-in-the-middle attacks.

Cross-site scripting vulnerability in Nessus versions 6.8.0, 6.8.1, 6.9.0, 6.9.1 and 6.9.2 allows remote authenticated attackers to inject arbitrary web script or HTML via unspecified vectors.