HOMEVULNERABILITIESCVE-2018-20247
HIGH

CVE-2018-20247

CWE-121Published: December 24, 2018· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

In Foxit Quick PDF Library (all versions prior to 16.12), issue where loading a malformed or malicious PDF containing a recursive page tree structure using the LoadFromFile, LoadFromString or LoadFromStream functions results in a stack overflow.

NVD Source

Technical Analysis

CVE-2018-20247 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)
quick pdf library
Source: NVD CPE · 1 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

ADVISORYhttp://www.securityfocus.com/bid/106306
ADVISORYhttps://www.foxitsoftware.com/support/security-bulletins.php
ADVISORYhttp://www.securityfocus.com/bid/106306
ADVISORYhttps://www.foxitsoftware.com/support/security-bulletins.php

All References (4)

→
http://www.securityfocus.com/bid/106306Third Party Advisory · VDB Entry
→
https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory
→
http://www.securityfocus.com/bid/106306Third Party Advisory · VDB Entry
→
https://www.foxitsoftware.com/support/security-bulletins.phpVendor Advisory

Quick Facts

CVE IDCVE-2018-20247
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-121
CISA KEVNo
Affected1 vendor(s)
PublishedDec 24, 2018

Related CVEs (CWE-121)

CVE-2023-3943
10.0
CVE-2014-9190
10.0
CVE-2021-21961
10.0
CVE-2021-21960
10.0
CVE-2014-0787
10.0
CVE-2026-37541
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-20247 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. CVE data is provided under the NVD usage policy.
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