What’s Vulnerable › Vulnerabilities

CVE-2026-41079: OpenPrinting CUPS: Heap out-of-bounds read in SNMP supply-level polling leaks stack memory to authenticated users

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-24 · updated 2026-10-26
• Weakness: CWE-125

Description

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.

Affected products

• OpenPrinting cups: before 2.4.17 — fixed in 2.4.17

How to fix

Upgrade to a fixed version: OpenPrinting cups 2.4.17. Check the vendor advisory for mitigations.

References

• https://github.com/OpenPrinting/cups/commit/b7c2525a885f528d243c3a92197ca99609b3f080
• https://github.com/OpenPrinting/cups/commit/d7fe0f521ff3b24676511e747b058362b9a20737
• https://github.com/OpenPrinting/cups/security/advisories/GHSA-6wpw-g8g6-wvrv
• https://github.com/OpenPrinting/cups/security/advisories/GHSA-6wpw-g8g6-wvrv

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