Local Privilege Escalation Vulnerability in Foxit PDF Editor/Reader
CVE-2026-91798

8.8HIGH

Key Information:

Vendor

Foxit Inc.

Status
Foxit PDF Editor
Foxit
Vendor
CVE Published:
23 September 2026

What is CVE-2026-91798?

A local privilege escalation vulnerability in the update daemon of Foxit PDF Editor/Reader arises from improper permissions on the configuration file. This misconfiguration allows standard users to alter critical files, potentially leading to the execution of arbitrary scripts with elevated privileges. Users of affected versions should review this security issue promptly to mitigate risks associated with unauthorized access and control.

Affected Version(s)

Foxit PDF Editor Windows Versions 2026.2 and earlier

Foxit PDF Editor Windows Versions 14.0.7 and earlier

Foxit PDF Editor Windows Versions 13.2.6 and earlier

References

https://www.foxit.com/support/security-bulletins.html

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dominic Musgrave
.