Skip to content
Fencer Vulns
medium 4.3

CVE-2026-41079 json

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

published 2026-04-24 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-25574

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

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.

Patch / fix

  • openprinting cups 2.4.17
  • cups Debian 14 2.4.17-1

debian advisories DEBIAN-CVE-2026-41079

  • cups Ubuntu 22.04 LTS 2.4.1op1-1ubuntu4.20
  • cups Ubuntu 24.04 LTS 2.4.7-1.2ubuntu7.13
  • cups Ubuntu 25.10 2.4.12-0ubuntu3.9
  • cups Ubuntu 26.04 LTS 2.4.16-1ubuntu1.2

ubuntu advisories UBUNTU-CVE-2026-41079

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cups SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +13 more 2.2.7-150000.3.101.2
  • cups SLES LTSS Extended Security 12 SP5 1.7.5-20.73.1

suse advisories SUSE-SU-2026:5078-1SUSE-SU-2026:4447-1

  • cups openSUSE Tumbleweed 2.4.19-2.1

opensuse advisories openSUSE-SU-2026:10820-1

  • cups Azure Linux 3.0 2.4.18-1

azure linux advisories AZL-83627

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-41079 updated cvss 4.3

cups: CUPS: Information disclosure via crafted SNMP response

  • Red Hat Enterprise Linux 6 cups, cups-lpd, cups-php, cups-libs
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 cups, cups-lpd, cups-libs, cups-client, cups-ipptool, cups-filesystem Red Hat Enterprise Linux 8 cups, cups-lpd, cups-libs, cups-client, cups-ipptool, cups-filesystem Red Hat Enterprise Linux 9 cups, cups-lpd, cups-libs, cups-client, cups-ipptool, cups-filesystem, +1 more Red Hat Enterprise Linux 10 cups Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8
    affected: no fix available “Fix deferred”
  • Red Hat Hardened Images cups
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/OpenPrinting/cups/security/advisories/GHSA-6wpw-g8g6-wvrv referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected products

  • OpenPrinting cups

Classification

Weakness
  • CWE-125 Out-of-bounds Read
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.