Medium severity · published Aug 22, 2023
CVE-2020-21896
A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in source/fitz/svg-device.c in Artifex Software MuPDF 1.16.0 allows remote attackers to cause a denial…
5.5
CVSS
0.5%
EPSS
No
On KEV
Description
A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in source/fitz/svg-device.c in Artifex Software MuPDF 1.16.0 allows remote attackers to cause a denial of service via opening of a crafted PDF file.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
Mupdf · Artifex
1.16.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-21896
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-21896
www.ghostscript.com
http://www.ghostscript.com/cgi-bin/findgit.cgi?8719e07834d6a72b6b4131539e49ed1e8e2ff79e
Exploit
https://bugs.ghostscript.com/show_bug.cgi?id=701294
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/08/msg00017.html
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