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CVE-2018-19477

26
FAUCET Score

CVE-2018-19477 is a high-severity type confusion vulnerability in Artifex Ghostscript versions prior to 9.26, specifically within the psi/zfjbig2.c component, which also affects Canonical, Debian, and Red Hat distributions. This flaw allows remote attackers to bypass intended access restrictions, potentially leading to high impact on confidentiality, integrity, and availability, with a CVSS score of 7.8. While the vulnerability requires user interaction and local access, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.26CPE matchmatch criteria
cpe:2.3:a:artifex:ghostscript:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.04%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0304 is in the 87th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ghostscript-0:9.07-31.el7_6.9
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ghostscript
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ghostscript

Vendor Advisories (1)

redhatCVE-2018-19477Important

ghostscript: access bypass in psi/zfjbig2.c (700168)

Nov 20, 2018

References

git.ghostscript.com
git.ghostscript.com
access.redhat.com / errata/RHBA-2019:0327
Third Party Advisory
access.redhat.com / errata/RHSA-2019:0229
Third Party Advisory
bugs.ghostscript.com / show_bug.cgi
Issue TrackingPatchVendor Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00036.html
Mailing ListThird Party Advisory
semmle.com / news/semmle-discovers-severe-vulnerability-ghostscript-postscript-pdf
ExploitMitigationThird Party Advisory
usn.ubuntu.com / 3831-1
Third Party Advisory
debian.org / security/2018/dsa-4346
Third Party Advisory
ghostscript.com / doc/9.26/History9.htm
Release NotesVendor Advisory
securityfocus.com / bid/106154
Third Party AdvisoryVDB Entry