HOMEVULNERABILITIESCVE-2021-31436
HIGH

CVE-2021-31436

CWE-122Published: April 29, 2021· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Studio Photo 3.6.6.931. 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 SGI files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12376.

NVD Source

Technical Analysis

CVE-2021-31436 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.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

foxitsoftware1 product(s)
foxit studio photo
Microsoft1 product(s)
windows
Source: NVD CPE · 2 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.html
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-21-479/
ADVISORYhttps://www.foxitsoftware.com/support/security-bulletins.html
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-21-479/

All References (4)

→
https://www.foxitsoftware.com/support/security-bulletins.htmlVendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-21-479/Third Party Advisory · VDB Entry
→
https://www.foxitsoftware.com/support/security-bulletins.htmlVendor Advisory
→
https://www.zerodayinitiative.com/advisories/ZDI-21-479/Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2021-31436
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-122
CISA KEVNo
Affected2 vendor(s)
PublishedApr 29, 2021

Related CVEs (CWE-122)

CVE-2022-34819
10.0
CVE-2021-21940
10.0
CVE-2026-46752
10.0
CVE-2025-23123
10.0
CVE-2021-25387
10.0
CVE-2026-44050
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-31436 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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