CVE-2025-58436

OpenPrinting CUPS slow client can halt cupsd, leading to a possible DoS attack

MEDIUM
5.5
CVSS Score
Published: November 29, 2025 at 02:15 AM UTC
Updated: October 7, 2026 at 08:10 PM UTC
1 product affected across 1 vendorCUPS

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.4.15
Affected range stops below 2.4.15, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/OpenPrinting/cups/security/advisories/GHSA-8wpw-vfgm-qrrr
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/OpenPrinting/cups/releases/tag/v2.4.15
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2025/11/27/4

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-400

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