HOMEVULNERABILITIESCVE-2021-31447
LOW

CVE-2021-31447

CWE-125Published: May 7, 2021· Updated: Jun 17, 2026

3.3
CVSS v3.1

Official Description

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of U3D objects embedded in PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-13269.

NVD Source

Technical Analysis

CVE-2021-31447 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected Vendors & Products

foxitsoftware2 product(s)
foxit readerphantompdf
Microsoft1 product(s)
windows
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.foxitsoftware.com/support/security-bulletins.php
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-21-536/
ADVISORYhttps://www.foxitsoftware.com/support/security-bulletins.php
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-21-536/

All References (4)

→
https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-21-536/Third Party Advisory · VDB Entry
→
https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-21-536/Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2021-31447
CVSS Score3.3 / 10
SeverityLOW
WeaknessCWE-125
CISA KEVNo
Affected2 vendor(s)
PublishedMay 7, 2021

Related CVEs (CWE-125)

CVE-2021-41556
10.0
CVE-2013-0767
10.0
CVE-2017-14451
10.0
CVE-2021-21777
10.0
CVE-2009-2523
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-31447 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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