OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.17, a network-adjacent attacker can send a crafted SNMP response to the CUPS SNMP backend that causes an out-of-bounds read of up to 176 bytes past a stack buffer. The leaked memory is converted from UTF-16 to UTF-8 and stored as printer supply description strings, which are subsequently visible to authenticated users via IPP Get-Printer-Attributes responses and the CUPS web interface. This vulnerability is fixed in 2.4.17.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8405-1 advisory.

    Ariel Silver discovered that CUPS incorrectly handled username comparisons during authorization checks. A     local attacker could possibly use this issue to gain unauthorized access to restricted operations.
    (CVE-2026-27447)

    Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled notify-recipient-uri values in the RSS     notifier. A remote attacker could possibly use this issue to overwrite lp-writable files and cause a     denial of service. (CVE-2026-34978)

    Jacob Newman discovered that CUPS incorrectly handled filter option strings when processing job     attributes. An attacker could use this issue to cause CUPS to crash, resulting in a denial of service, or     possibly execute arbitrary code. (CVE-2026-34979)

    Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled page-border values in shared PostScript     queues. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2026-34980)

    Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled localhost authentication to attacker-     controlled IPP services. A local attacker could possibly use this issue to overwrite arbitrary files and     execute arbitrary code. (CVE-2026-34990)

    Tomer Fichman discovered that CUPS incorrectly handled negative job-password-supported values. A local     attacker could possibly use this issue to cause CUPS to crash, resulting in a denial of service.
    (CVE-2026-39314)

    Tomer Fichman discovered that CUPS incorrectly handled temporary printer deletion. An attacker could     possibly use this issue to cause CUPS to crash, resulting in a denial of service, or to execute arbitrary     code. (CVE-2026-39316)

    Tomer Fichman discovered that CUPS incorrectly handled certain malformed SNMP responses. An attacker could     possibly use this issue to obtain sensitive information. (CVE-2026-41079)

Tenable has extracted the preceding description block directly from the Ubuntu 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 openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20812-1 advisory.

    This update for cups fixes the following issues

    - CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).
    - CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss     (bsc#1261571).
    - CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).
    - CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over     the network       (bsc#1261569).
    - CVE-2026-34990: Local print admin token disclosure using temporary printers (bsc#1261568).
    - CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service     (bsc#1261743).
    - CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).
    - CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds read and sensitive memory     disclosure       (bsc#1263116).

    Changes for cups:

    - Version upgrade to 2.4.19.

    - Version upgrade to 2.4.18.

    - Version upgrade to 2.4.17:

     * The scheduler followed symbolic links when cleaning out      its temporary directory (Issue #1448)
     * Updated `cupsFileGetConf` and `cupsFilePutConf` to escape      more characters.
     * Updated man page `cancel` (Issue #984)
     * Updated `cupsRasterReadHeader` to validate more of the      page header values (Issue #1501)
     * Fixed an issue with the class/printer CGI name checking.
     * Fixed infinite loop in `http_write()` on busy print servers      (Issue #827)
     * Fixed potential TLS blocking issues (Issue #1128)
     * Fixed a job history bug in the scheduler (Issue #1440)
     * Fixed notifier logging bug that would result in nul bytes      getting into the log (Issue #1450)
     * Fixed possible use-after-free in `cupsdReadClient()`      (Issue #1454)
     * Fixed a document format bug in the IPP backend (Issue #1457)
     * Fixed DRAIN_OUTPUT race condition (Issue #1461)
     * Fixed a bug when then `ippFindXxx` and `ippSetXxx` functions      were mixed.
     * Fixed the mapping of supply type keywords to SNMP names.
     * Fixed a bug in the IPP backend when SNMP was disabled.
     * Fixed a crash bug in the rastertoepson filter.
     * Fixed a bug in cgiCheckVariables.
     * Fixed handling read/write errors with OpenSSL (Issue #1506)
     * Fixed handling rehandshake error in `_httpTLSRead`      (Issue #1508)
     * Fixed a debug printf bug on Windows (Issue #1529)
     * Fixed a recursion issue with encoding of nested collections      (Issue #1539)
     * Fixed parsing of the `LimitRequestBody`, `MaxLogSize`,      and `MaxRequestSize` directives in cupsd.conf (Issue #1540)
     * Fixed a parsing bug in `ipptool` (Issue #1542)
     * Fixed blank line detection in the `rastertolabel` filter      (Issue #1545)
     * Fixed `httpPeek` edge case on compressed streams

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

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1668 advisory.

    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)

    OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior     to 2.4.17, a network-adjacent attacker can send a crafted SNMP response to the CUPS SNMP backend that     causes an out-of-bounds read of up to 176 bytes past a stack buffer. The leaked memory is converted from     UTF-16 to UTF-8 and stored as printer supply description strings, which are subsequently visible to     authenticated users via IPP Get-Printer-Attributes responses and the CUPS web interface. This     vulnerability is fixed in 2.4.17. (CVE-2026-41079)

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

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

An update of the cups package has been released.

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. Prior     to 2.4.17, a network-adjacent attacker can send a crafted SNMP response to the CUPS SNMP backend that     causes an out-of-bounds read of up to 176 bytes past a stack buffer. The leaked memory is converted from     UTF-16 to UTF-8 and stored as printer supply description strings, which are subsequently visible to     authenticated users via IPP Get-Printer-Attributes responses and the CUPS web interface. This     vulnerability is fixed in 2.4.17. (CVE-2026-41079)

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

ID	Name	Product	Family	Severity
320390	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : CUPS vulnerabilities (USN-8405-1)	Nessus	Ubuntu Local Security Checks	medium
317701	openSUSE 16 Security Update : cups (openSUSE-SU-2026:20812-1)	Nessus	SuSE Local Security Checks	medium
315651	Amazon Linux 2023 : cups, cups-client, cups-devel (ALAS2023-2026-1668)	Nessus	Amazon Linux Local Security Checks	medium
312114	Photon OS 4.0: Cups PHSA-2026-4.0-1008	Nessus	PhotonOS Local Security Checks	medium
311396	Photon OS 5.0: Cups PHSA-2026-5.0-0837	Nessus	PhotonOS Local Security Checks	medium
310521	Linux Distros Unpatched Vulnerability : CVE-2026-41079	Nessus	Misc.	medium

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CVE-2026-41079

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