CVE-2026-41079

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.

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

CWE-200 CWE-200

Affected Products

Vendor	Product	Versions
openprinting	cups	< 2.4.17

References

Advisories & Patches

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

Exploits

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

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-41079? +

CVE-2026-41079 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41079? +

CVE-2026-41079 affects products from openprinting, specifically: cups. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41079? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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