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CVE-2018-3965

27
FAUCET Score

CVE-2018-3965 is a high-severity use-after-free vulnerability in the JavaScript engine of Foxit PDF Reader and PhantomPDF, affecting versions 9.1.0.5096 and earlier on Windows. This flaw allows an attacker to achieve arbitrary code execution by tricking a user into opening a specially crafted PDF document or visiting a malicious website if the browser plugin is enabled. The CVSS score is 7.8 (High), indicating a low attack complexity and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, with a BleepingComputer article noting a security update addressing 118 vulnerabilities.

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
6.04%
Probability of exploitation in next 30 days
EPSS Percentile
92.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0604 is in the 93rd 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

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 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-2018-0630
ExploitThird Party Advisory