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CVE-2018-3994

28
FAUCET Score

CVE-2018-3994 is a critical use-after-free vulnerability in the JavaScript engine of Foxit PDF Reader version 9.2.0.9297 and PhantomPDF, affecting Windows. This flaw allows arbitrary code execution when a user opens a specially crafted PDF or visits a malicious website if the browser plugin is enabled. Rated 8.8 HIGH, it requires user interaction but can lead to full compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, there is some community discussion and media coverage, though no public exploit code is currently available.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.2.0.9297CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:phantompdf:*:*:*:*:*:*:*:*
<= 9.2.0.9297CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:reader:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.0HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.16%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0316 is in the 86th percentile among its peer group of 14,875 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

foxitsoftware.com / support/security-bulletins.php
PatchVendor Advisory
talosintelligence.com / vulnerability_reports/TALOS-2018-0662
ExploitThird Party Advisory
securitytracker.com / id/1041769
Third Party AdvisoryVDB Entry