CVE-2020-16293

Name: CVE-2020-16293
Creator: NVD / NIST
Published: 2020-08-13T03:15:13.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.79%

Last modified Jun 17, 2026

CVE-2020-16293 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 1.79% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

1.79%

75.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Artifex	Ghostscript	< 9.52
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04

References

https://bugs.ghostscript.com/show_bug.cgi?id=701795Exploit, Issue Tracking, Vendor Advisory
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=7870f4951bcc6a153f317e3439e14d0e929fd231
https://lists.debian.org/debian-lts-announce/2020/08/msg00032.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202008-20Third Party Advisory
https://usn.ubuntu.com/4469-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4748Third Party Advisory
https://bugs.ghostscript.com/show_bug.cgi?id=701795Exploit, Issue Tracking, Vendor Advisory
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=7870f4951bcc6a153f317e3439e14d0e929fd231
https://lists.debian.org/debian-lts-announce/2020/08/msg00032.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202008-20Third Party Advisory
https://usn.ubuntu.com/4469-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4748Third Party Advisory

Timeline

Published: Aug 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-16293?

How severe is CVE-2020-16293?

CVE-2020-16293 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.79% probability of exploitation in the next 30 days.

How do I fix CVE-2020-16293?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-16293?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST