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CVE-2018-16648

21
FAUCET Score

CVE-2018-16648 describes a denial-of-service vulnerability in Artifex MuPDF version 1.13.0, where a crafted PDF file can lead to a segmentation fault due to an array-index underflow in the fz_append_byte function. This vulnerability has a CVSS score of 5.5 (Medium), indicating that a local attacker could trigger the issue with low attack complexity, requiring user interaction, resulting in high availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.13.0CPE matchmatch criteria
cpe:2.3:a:artifex:mupdf:1.13.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.47%
Probability of exploitation in next 30 days
EPSS Percentile
71.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0147 is in the 81st percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.ghostscript.com / show_bug.cgi
ExploitThird Party Advisory
cgit.ghostscript.com / cgi-bin/cgit.cgi/mupdf.git/commit
lists.debian.org / debian-lts-announce/2020/07/msg00019.html