{"cve":"CVE-2018-16648","nvd":{"published":"2018-09-06T23:29:01.927","modified":"2026-06-17T01:44:37.023","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-129"],"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"],"products":["artifex:mupdf"],"source":"nvd","synced_at":"2026-10-19T20:53:14.491561039+00:00"},"epss":{"cve":"CVE-2018-16648","score":0.0147,"percentile":0.73759,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}