CVE-2025-64524 CUPS rastertopclx Filter Vulnerable to Heap Buffer Overflow Leading to Potential Arbitrary Code Execution

Low 3.3 Published 20 Nov 2025 Updated 21 Nov 2025

A heap buffer overflow in the CUPS rastertopclx filter allows attackers to execute arbitrary code or cause a denial of service via malicious input.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2025-64524?

CVE-2025-64524 is a low-severity memory corruption vulnerability in OpenPrinting cups-filters, published on 20 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. In versions 2.0.1 and prior, a heap-buffer-overflow vulnerability in the rastertopclx filter causes the program to crash with a segmentation fault when processing maliciously crafted input data. This issue can be exploited to trigger memory corruption, potentially leading to arbitrary code execution. This issue has been patched via commit 956283c.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2025-64524?

It affects 1 product.

Products include Openprinting Cups-Filters.

How do I fix CVE-2025-64524?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-64524 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-64524 exists.

Sources

Also known as CLSA-2026-1768210495, CLSA-2026-1768556132, DEBIAN-CVE-2025-64524, GHSA-rq44-2q5p-x3hv, MGASA-2025-0312, OESA-2025-2751 and 7 more.