CVE-2018-16648

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-09-06 · updated 2026-06-17
Weakness: CWE-129

Description

In Artifex MuPDF 1.13.0, the fz_append_byte function in fitz/buffer.c allows remote attackers to cause a denial of service (segmentation fault) via a crafted pdf file. This is caused by a pdf/pdf-device.c pdf_dev_alpha array-index underflow.

Affected products

Artifex MuPDF: 1.13.0

References

https://bugs.ghostscript.com/show_bug.cgi?id=699685
https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=38f883fe129a5e89306252a4676eaaf4bc968824
https://lists.debian.org/debian-lts-announce/2020/07/msg00019.html
https://bugs.ghostscript.com/show_bug.cgi?id=699685
https://lists.debian.org/debian-lts-announce/2020/07/msg00019.html

Get alerted when CVE-2018-16648 or the next vulnerability affects your stack