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CVE-2021-31466

25
FAUCET Score

CVE-2021-31466 is a remote code execution vulnerability affecting Foxit Reader version 10.1.3.37598, specifically within its handling of U3D objects in PDF files. This flaw stems from insufficient validation of user-supplied data, leading to a read past the end of an allocated data structure. Successful exploitation requires user interaction, such as opening a malicious PDF, and allows an attacker to execute code in the context of the current process. Rated with a CVSS score of 7.8 (High), this vulnerability has a low attack complexity but a high impact on confidentiality, integrity, and availability. 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
<= 9.7.4.29600CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:3d:*:*:*:*:*:foxit_reader:*:*
<= 9.7.4.29600CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:3d:*:*:*:*:*:phantompdf:*:*
>= 10.0.0.0, <= 10.1.3.37598CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:3d:*:*:*:*:*:foxit_reader:*:*
>= 10.0.0.0, <= 10.1.3.37598CPE matchmatch criteria
cpe:2.3:a:foxitsoftware:3d:*:*:*:*:*:phantompdf:*:*

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
2.82%
Probability of exploitation in next 30 days
EPSS Percentile
85.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0282 is in the 85th percentile among its peer group of 11,617 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

Remediation records are not available for this CVE.

References

foxitsoftware.com / support/security-bulletins.php
Not ApplicableVendor Advisory
zerodayinitiative.com / advisories/ZDI-21-555
Third Party AdvisoryVDB Entry