Main Vulnerability Database Vulnerabilities #VU151834

Time-of-check Time-of-use (TOCTOU) Race Condition in Foxit PDF Editor (formerly Foxit PhantomPDF) and Foxit PDF Reader for Windows - CVE-2026-91813

Published: September 23, 2026

Vulnerability identifier: #VU151834

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-91813

CWE-ID: CWE-367

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to a time-of-check time-of-use race condition in the update process when downloading and extracting update files. A local user can race update file operations to escalate privileges.

Affected software

Foxit PDF Editor (formerly Foxit PhantomPDF)
Foxit PDF Reader for Windows

How to mitigate CVE-2026-91813

Install security update from vendor's website.

Foxit PDF Editor (formerly Foxit PhantomPDF) - addressed in versions 13.2.7.24160, 14.0.8.33807, 2026.2.1.39815
Foxit PDF Reader for Windows - update to 2026.2.1.39815

External References

https://www.foxitsoftware.com/support/security-bulletins.html?Security+updates+available+in+Foxit+PDF+Reader+2026.2.1+and+Foxit+PDF+Editor+2026.2.1%2F14.0.82026-09-23+00%3A00%3A00

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