CVE-2020-16293: Artifex Ghostscript

Medium severity, CVSS 5.5. EPSS: 1.8% chance of exploitation in the next 30 days.

A null pointer dereference vulnerability in compose_group_nonknockout_nonblend_isolated_allmask_common() in base/gxblend.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted PDF file. This is fixed in v9.51.

Affected products

• Artifex Ghostscript: before 9.52 (fixed in 9.52)
• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 20.04 only
• Debian Debian Linux: version 9.0 only; version 10.0 only

Published 2020-08-13. Last modified 2026-06-17.