OpenPrinting cups up to 2.4.16 on Linux Web Interface out-of-bounds

Summaryinfo

A vulnerability marked as problematic has been reported in OpenPrinting cups up to 2.4.16 on Linux. This impacts an unknown function of the component Web Interface. The manipulation leads to out-of-bounds. This vulnerability is traded as CVE-2026-41079. Access to the local network is required for this attack to succeed. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OpenPrinting cups up to 2.4.16 on Linux. This issue affects an unknown code of the component Web Interface. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. The summary by CVE is:

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 advisory is shared at github.com. The identification of this vulnerability is CVE-2026-41079 since 04/16/2026. The exploitation is known to be easy. The attack needs to be initiated within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 310521 (Linux Distros Unpatched Vulnerability : CVE-2026-41079), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.4.17 eliminates this vulnerability. Applying the patch b7c2525a885f528d243c3a92197ca99609b3f080 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (310521) and EUVD (EUVD-2026-25574). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Printing Software

Vendor

• OpenPrinting

Name

• cups

Version

• 2.4.0
• 2.4.1
• 2.4.2
• 2.4.3
• 2.4.4
• 2.4.5
• 2.4.6
• 2.4.7
• 2.4.8
• 2.4.9
• 2.4.10
• 2.4.11
• 2.4.12
• 2.4.13
• 2.4.14
• 2.4.15
• 2.4.16

License

• open-source

Website

• Product: https://github.com/OpenPrinting/cups/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion