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CVE-2026-91813

8.8 · HIGH

A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update package to be replaced between download and high-privilege extraction due to insufficient file locking and integrity v…

Published Sep 23, 2026foxitCWE-367EPSS 0.09%

Overview

CVE-2026-91813 is a high-severity vulnerability affecting foxit pdf_editor. It was published on September 23, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update package to be replaced between download and high-privilege extraction due to insufficient file locking and integrity validation. This could enable local attackers to execute arbitrary code with elevated privileges.

Remediation

Check the references section for vendor advisories and patches from foxit. Update pdf_editor to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
foxitpdf_editor0Affected
foxitpdf_reader0Affected

References

Refwww.foxit.com/support/security-bulletins.html

How CyberStrike helps

Frequently asked questions

What is CVE-2026-91813?

CVE-2026-91813 is a high-severity vulnerability affecting foxit pdf_editor. It was published on September 23, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-91813?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-91813?

Check the references section for vendor advisories and patches from foxit. Update pdf_editor to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-91813?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-91813 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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