CVE-2021-3781

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 83.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-02-16 · updated 2026-06-17
Weakness: CWE-20

Description

A trivial sandbox (enabled with the `-dSAFER` option) escape flaw was found in the ghostscript interpreter by injecting a specially crafted pipe command. This flaw allows a specially crafted document to execute arbitrary commands on the system in the context of the ghostscript interpreter. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Affected products

Artifex Ghostscript: 9.50, 9.52, 9.53.3, 9.54.0
Fedoraproject Fedora: 34

References

https://bugzilla.redhat.com/show_bug.cgi?id=2002271
https://ghostscript.com/CVE-2021-3781.html
https://security.gentoo.org/glsa/202211-11
https://bugzilla.redhat.com/show_bug.cgi?id=2002271
https://ghostscript.com/CVE-2021-3781.html
https://security.gentoo.org/glsa/202211-11

Get alerted when CVE-2021-3781 or the next vulnerability affects your stack