Out-of-bounds Read in Openprinting Cups
CVE-2026-41079
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (33.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Openprinting Cups — versions < 2.4.17
Weakness classification (CWE)
References
- github.com/OpenPrinting/cups/security/advisories/GHSA-6wpw-g8g6-wvrv (Exploit, Patch, Mitigation, Vendor Advisory)
- github.com/OpenPrinting/cups/commit/b7c2525a885f528d243c3a92197ca99609b3f080 (Patch)
- github.com/OpenPrinting/cups/commit/d7fe0f521ff3b24676511e747b058362b9a20737 (Patch)
Frequently asked questions
- What is CVE-2026-41079?
- CVE-2026-41079 is a medium-severity vulnerability in Openprinting Cups, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2026-04-24.
- How severe is CVE-2026-41079?
- Medium severity. CVSS v3 base score is 4.3 out of 10.