CVE-2018-9951

HIGH

Foxit Reader < 9.0.1.1049 - Remote Code Execution via CPDF_Object Use-After-Free

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-9951. PoCs published by sandi-go.

AI-analyzed exploit summary This repository contains a writeup describing a use-after-free vulnerability in Foxit Reader and PhantomPDF, which can lead to remote code execution. The vulnerability is triggered by improper validation of CPDF_Object objects.

Description

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.0.29935. 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 CPDF_Object objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code under the context of the current process. Was ZDI-CAN-5414.

Exploits (1)

nomisec WRITEUP
by sandi-go · poc
https://github.com/sandi-go/cve-2018-9951

This repository contains a writeup describing a use-after-free vulnerability in Foxit Reader and PhantomPDF, which can lead to remote code execution. The vulnerability is triggered by improper validation of CPDF_Object objects.

Classification
Writeup 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Theoretical
Target: Foxit Reader 8.3.5.30351 and prior, Foxit PhantomPDF 8.3.5.30351 and prior
No auth needed
Prerequisites: Target must open a malicious file or visit a malicious page
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Patch, Vendor Advisory x_refsource_confirm
https://www.foxitsoftware.com/support/security-bulletins.php
Third Party Advisory, VDB Entry x_refsource_misc
https://zerodayinitiative.com/advisories/ZDI-18-335

Scores

CVSS v3 8.8
EPSS 0.0484
EPSS Percentile 90.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (2)
foxitsoftware/foxit_reader < 9.0.1.1049
foxitsoftware/phantompdf < 9.0.1.1049
Published May 17, 2018
Tracked Since Feb 18, 2026