What is the CVSS score of CVE-2020-26539?

CVE-2020-26539 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.2%.

Is there a patch available for CVE-2020-26539?

Yes, a patch is available for CVE-2020-26539. Update the affected software to the latest version immediately.

Foxit Reader CVE-2020-26539

CRITICAL

Use After Free (CWE-416)

2020-10-02 cve@mitre.org

Use After Free Memory Corruption RCE Foxit Reader Phantompdf

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Oct 02, 2020 - 08:15 nvd

CRITICAL 9.8

DescriptionNVD

An issue was discovered in Foxit Reader and PhantomPDF before 10.1. When there is a multiple interpretation error for /V (in the Additional Action and Field dictionaries), a use-after-free can occur with resultant remote code execution (or an information leak).

AnalysisAI

An issue was discovered in Foxit Reader and PhantomPDF before 10.1. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. An issue was discovered in Foxit Reader and PhantomPDF before 10.1. When there is a multiple interpretation error for /V (in the Additional Action and Field dictionaries), a use-after-free can occur with resultant remote code execution (or an information leak). Affected products include: Foxitsoftware Foxit Reader, Foxitsoftware Phantompdf. Version information: before 10.1..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.