OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-bce5853e95 advisory.

    2.4.17 - security fixes for CVE-2026-39316, CVE-2026-39314, CVE-2026-34979, CVE-2026-34990,     CVE-2026-27447, CVE-2026-34978


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 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-34454fdb74 advisory.

    2.4.17 - security fixes for CVE-2026-39316, CVE-2026-39314, CVE-2026-34979, CVE-2026-34990,     CVE-2026-27447, CVE-2026-34978


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 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-82a2214b53 advisory.

    2.4.17 - security fixes for CVE-2026-39316, CVE-2026-39314, CVE-2026-34979, CVE-2026-34990,     CVE-2026-27447, CVE-2026-34978


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 version of cups installed on the remote host is prior to 2.4.17. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-107-01 advisory.

    New cups packages are available for Slackware 15.0 and -current to fix security issues.

Tenable has extracted the preceding description block directly from the cups 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-2026-7d1173fd68 advisory.

    Automatic update for cups-2.4.17-1.fc45.

    ##### **Changelog**

    ```
    * Fri Apr 17 2026 Zdenek Dohnal <zdohnal@redhat.com> - 1:2.4.17-1
    - 2.4.17 (fedora#2456363, fedora#2456362, fedora#2454994, fedora#2454993,       fedora#2454992, fedora#2454990)

    ```

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.

  - OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In     versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-     insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user     to gain unauthorized access to restricted operations by using a user with a username that differs only in     case from an authorized user. At time of publication, there are no publicly available patches.
    (CVE-2026-27447)

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

ID	Name	Product	Family	Severity
310205	Fedora 44 : cups (2026-bce5853e95)	Nessus	Fedora Local Security Checks	medium
309195	Fedora 42 : cups (2026-34454fdb74)	Nessus	Fedora Local Security Checks	medium
307661	Fedora 43 : cups (2026-82a2214b53)	Nessus	Fedora Local Security Checks	medium
307392	Slackware Linux 15.0 / current cups Multiple Vulnerabilities (SSA:2026-107-01)	Nessus	Slackware Local Security Checks	medium
307391	Fedora 45 : cups (2026-7d1173fd68)	Nessus	Fedora Local Security Checks	medium
304969	Linux Distros Unpatched Vulnerability : CVE-2026-27447	Nessus	Misc.	medium

Detections

Analytics

CVE-2026-27447

medium

Tenable Plugins

medium

medium

medium

medium

medium

medium