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Fencer Vulns
high 7.8

CVE-2020-16600 json

A Use After Free vulnerability exists in Artifex Software, Inc.

published 2020-12-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-8561

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

A Use After Free vulnerability exists in Artifex Software, Inc. MuPDF library 1.17.0-rc1 and earlier when a valid page was followed by a page with invalid pixmap dimensions, causing bander - a static - to point to previously freed memory instead of a newband_writer.

Patch / fix

  • mupdf Debian 14, Debian 13, Debian 12 1.17.0+ds1-1

debian advisories DEBIAN-CVE-2020-16600

  • mupdf Package Hub 15 SP3, Package Hub 15 SP2, Package Hub 15 SP1 +2 more 1.12.0-bp153.2.3.1

opensuse advisories openSUSE-SU-2021:1341-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-16600 updated cvss 7.8

mupdf: use-after-free when a valid page was followed by a page with invalid pixmap dimensions

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.