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CVE-2021-31468

25
FAUCET Score

CVE-2021-31468 is a high-severity vulnerability affecting Foxit Reader version 10.1.3.37598, specifically its handling of U3D files embedded in PDF documents. This flaw, categorized as a read past the end of an allocated data structure (CWE-125), allows remote attackers to execute arbitrary code. Exploitation requires user interaction, as the target must open a malicious PDF or visit a malicious page, making it a local attack vector with low complexity. Successful exploitation grants the attacker code execution in the context of the current process, leading to high impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. The vulnerability has received minimal community discussion and media coverage, suggesting a low level of public awareness.

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 11,621 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

Remediation records are not available for this CVE.

References

foxitsoftware.com / support/security-bulletins.php
Not ApplicableVendor Advisory
zerodayinitiative.com / advisories/ZDI-21-557
Third Party AdvisoryVDB Entry