CVE-2018-16648
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.
Does this matter?
Lower severity and a low EPSS score (1.47%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 1.47% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-129
- Affected
- artifex/mupdf
- Source
- cve@mitre.org
EPSS 1.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugs.ghostscript.com/show_bug.cgi?id=699685Exploit, Third Party Advisory
- 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=699685Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00019.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.