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CVE-2023-4504

HighPublished

OpenPrinting CUPS/libppd Postscript Parsing Heap Overflow

Published: Sep 21, 2023
Updated: Nov 4, 2025
Assigning CNA: AHA
Evidence observed: Aug 8, 2026

Primary CVSS

7.0/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.7%

Low · next 30 days

Percentile: 50.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.

Sources

CUPS-ExploitPoC
Heap-based buffer overflow example based on CVE-2023-4504

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