open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-8cbd9e2c8b advisory.

    Update to 1.5.8

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

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

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-6d919ea521 advisory.

    Update to 1.5.8

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

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

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3fd073ad5b advisory.

    Update to 1.5.8

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

Note that Nessus has not tested for these issues 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.

  - open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray()     in src/client/ua_client_connect.c. (CVE-2026-67857)

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

ID	Name	Product	Family	Type	Severity
346805	Fedora 43 : open62541 (2026-8cbd9e2c8b)	Nessus	Fedora Local Security Checks	Local	high
346464	Fedora 44 : open62541 (2026-6d919ea521)	Nessus	Fedora Local Security Checks	Local	high
346462	Fedora 45 : open62541 (2026-3fd073ad5b)	Nessus	Fedora Local Security Checks	Local	high
332763	Linux Distros Unpatched Vulnerability : CVE-2026-67857	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-67857

high

Tenable Plugins

high

high

high

high