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Vulnerability record · CVE-2020-15900 · published 28 July 2020

CVE-2020-15900: Artifex ghostscript out-of-bounds write vulnerability

Artifex · Ghostscript

A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.

9.8 CVSS 3.1 Critical EPSS 5.2% · top 7.8% CWE-191 · CWE-191CWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

A memory corruption issue was found in Artifex Ghostscript 9.50 and 9.52. Use of a non-standard PostScript operator can allow overriding of file access controls. The 'rsearch' calculation for the 'post' size resulted in a size that was too large, and could underflow to max uint32_t. This was fixed in commit 5d499272b95a6b890a1397e11d20937de000d31b.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html Mailing ListThird Party Advisory
https://artifex.com/security-advisories/CVE-2020-15900 Vendor Advisory
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b PatchThird Party Advisory
https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c PatchThird Party Advisory
https://security.gentoo.org/glsa/202008-20 Third Party Advisory
https://usn.ubuntu.com/4445-1/ Third Party Advisory
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=log
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00004.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00006.html Mailing ListThird Party Advisory
https://artifex.com/security-advisories/CVE-2020-15900 Vendor Advisory
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=5d499272b95a6b890a1397e11d20937de000d31b
https://github.com/ArtifexSoftware/ghostpdl/commit/5d499272b95a6b890a1397e11d20937de000d31b PatchThird Party Advisory
https://github.com/ArtifexSoftware/ghostpdl/commits/master/psi/zstring.c PatchThird Party Advisory
https://security.gentoo.org/glsa/202008-20 Third Party Advisory
https://usn.ubuntu.com/4445-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-15900), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.