Debian Linux - rsyslog - None

Ubuntu Linux - [Unknown description]

The version of rsyslog installed on the remote host is prior to 8.24.0-57. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3967 advisory.

    rsyslog's omfile dynaFile facility intentionally allows templates to generate flexible output paths. This     supports valid deployments that route logs into different directories or use dynamically generated file     names.

    A deployment becomes unsafe when a dynaFile template uses a value influenced by untrusted input as a path     component without explicit secure-path handling. In that configuration, the rendered path can escape the     operator's intended log directory.

    This is not limited to the RFC5424 HOSTNAME field. Any untrusted value that reaches a dynaFile path     component can create the condition.

    An attacker who can influence such a value may cause rsyslog to create or append to files outside the     intended output directory, subject to rsyslog's effective privileges and host confinement.

    The practical result depends on the deployment. Mandatory access controls, systemd sandboxing, filesystem     permissions, the configured input modules, and the selected output template can all limit or prevent     impact. A code-execution outcome requires additional, deployment-specific conditions and is not     representative of default distribution configurations.

    Default Debian and Ubuntu configurations do not enable a network input and a dynaFile action of this form.
    The affected configuration must be explicitly deployed. (CVE-2026-92709)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-3157 advisory.

    rsyslog's omfile dynaFile facility intentionally allows templates to generate flexible output paths. This     supports valid deployments that route logs into different directories or use dynamically generated file     names.

    A deployment becomes unsafe when a dynaFile template uses a value influenced by untrusted input as a path     component without explicit secure-path handling. In that configuration, the rendered path can escape the     operator's intended log directory.

    This is not limited to the RFC5424 HOSTNAME field. Any untrusted value that reaches a dynaFile path     component can create the condition.

    An attacker who can influence such a value may cause rsyslog to create or append to files outside the     intended output directory, subject to rsyslog's effective privileges and host confinement.

    The practical result depends on the deployment. Mandatory access controls, systemd sandboxing, filesystem     permissions, the configured input modules, and the selected output template can all limit or prevent     impact. A code-execution outcome requires additional, deployment-specific conditions and is not     representative of default distribution configurations.

    Default Debian and Ubuntu configurations do not enable a network input and a dynaFile action of this form.
    The affected configuration must be explicitly deployed. (CVE-2026-92709)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Debian Linux - rsyslog - None  Ubuntu Linux - [Unknown description] (CVE-2026-92709)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
365273	Amazon Linux 2 : rsyslog (ALAS-2026-3967)	Nessus	Amazon Linux Local Security Checks	Local	critical
365224	Amazon Linux 2023 : rsyslog, rsyslog-crypto, rsyslog-elasticsearch (ALAS2023-2026-3157)	Nessus	Amazon Linux Local Security Checks	Local	critical
349502	Linux Distros Unpatched Vulnerability : CVE-2026-92709	Nessus	Misc.	Local	critical

Detections

Analytics

CVE-2026-92709

critical

Tenable Plugins

critical

critical

critical