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CVE-2018-3964

29
FAUCET Score

CVE-2018-3964 is a use-after-free vulnerability in the JavaScript engine of Foxit PDF Reader (version 9.1.0.5096) and PhantomPDF, affecting Windows. A specially crafted PDF document can lead to arbitrary code execution by reusing a freed memory object. This vulnerability has a high CVSS score of 7.8, indicating a significant risk, as it requires user interaction (opening a malicious file or visiting a malicious site if the browser plugin is enabled) but can result in high confidentiality, integrity, and availability impacts. While there is no known active exploitation, public exploit code, or KEV listing, it has garnered some community discussion and media coverage, suggesting awareness of its potential.

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
9.48%
Probability of exploitation in next 30 days
EPSS Percentile
94.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0948 is in the 94th 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
Vendor AdvisoryPatch
talosintelligence.com / vulnerability_reports/TALOS-2018-0629
ExploitThird Party Advisory