CVE-2025-58436

low-risk

Published 2025-11-29

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to version 2.4.15, a client that connects to cupsd but sends slow messages, e.g. only one byte per second, delays cupsd as a whole, such that it becomes unusable by other clients. This issue has been patched in version 2.4.15.

Do I need to act?

0.03% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.1/10 Medium

LOCAL / HIGH complexity

Affected Products (1)

Cups

Affected Vendors

Openprinting

References (5)

Patch https://github.com/OpenPrinting/cups/commit/40008d76a001babbb9beb9d9d74b01a86fb6...

Release Notes https://github.com/OpenPrinting/cups/releases/tag/v2.4.15

Exploit https://github.com/OpenPrinting/cups/security/advisories/GHSA-8wpw-vfgm-qrrr

Mailing List http://www.openwall.com/lists/oss-security/2025/11/27/4

Exploit https://github.com/OpenPrinting/cups/security/advisories/GHSA-8wpw-vfgm-qrrr

/ 100

low-risk

Severity 13/34 · Low

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal