CVE-2025-58436: OpenPrinting CUPS slow client can halt cupsd, leading to a possible DoS attack
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.
Other sources
OpenPrinting CUPS slow client can halt cupsd, leading to a possible DoS attack
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OpenPrinting CUPS (cupsd)to a version that resolves this vulnerability.Fixed in 2.4.15Patch CVE-2025-58436
Event History
Frequently Asked Questions
What is the severity of CVE-2025-58436?
CVE-2025-58436 is classified as a severity issue that can render the CUPS service unusable when clients send messages too slowly.
How do I fix CVE-2025-58436?
To fix CVE-2025-58436, upgrade OpenPrinting CUPS to version 2.4.15 or later.
Who is affected by CVE-2025-58436?
Users of OpenPrinting CUPS versions prior to 2.4.15 are affected by CVE-2025-58436.
What types of systems are impacted by CVE-2025-58436?
CVE-2025-58436 impacts Linux and other Unix-like operating systems using OpenPrinting CUPS.
What is the nature of the vulnerability in CVE-2025-58436?
The vulnerability allows a client that sends messages very slowly to delay the CUPS service, affecting its performance for other clients.