Vulnerability · Published Apr 24, 2026 · Assigned by GitHub_M
CVE-2026-41079OpenPrinting CUPS: Heap out-of-bounds read in SNMP supply-level polling leaks stack memory to authenticated users
Medium 4.3
In plain English
A medium-severity out-of-bounds read in cups from OpenPrinting. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | cups | no fix listed | DEBIAN-CVE-2026-41079 |
| Debian:13 | cups | no fix listed | DEBIAN-CVE-2026-41079 |
| Debian:14 | cups | 2.4.17-1 | DEBIAN-CVE-2026-41079 |
| Ubuntu:22.04:LTS | cups | 2.4.1op1-1ubuntu4.20 | USN-8405-1 |
| Ubuntu:22.04:LTS | cups | 2.4.1op1-1ubuntu4.20 | UBUNTU-CVE-2026-41079 |
| Ubuntu:24.04:LTS | cups | 2.4.7-1.2ubuntu7.13 | USN-8405-1 |
| Ubuntu:24.04:LTS | cups | 2.4.7-1.2ubuntu7.13 | UBUNTU-CVE-2026-41079 |
| Ubuntu:25.10 | cups | 2.4.12-0ubuntu3.9 | USN-8405-1 |
| Ubuntu:25.10 | cups | 2.4.12-0ubuntu3.9 | UBUNTU-CVE-2026-41079 |
| Ubuntu:26.04:LTS | cups | 2.4.16-1ubuntu1.2 | UBUNTU-CVE-2026-41079 |
| Ubuntu:26.04:LTS | cups | 2.4.16-1ubuntu1.2 | USN-8405-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenPrinting | cups | < 2.4.17 |
Weakness: CWE-125, CWE-200 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N