Vulnerability in Foxit Software Inc. Pdf Editor
CVE-2026-91813
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.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Foxit Software Inc. Pdf Editor — versions Versions 13.2.6 and earlier, Versions 14.0.7 and earlier, Versions 2026.2 and earlier
- Foxit Software Inc. Pdf Reader — versions Versions 2026.2 and earlier
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-91813?
- CVE-2026-91813 is a high-severity vulnerability in Foxit Software Inc. Pdf Editor, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.8/10. Published 2026-09-23.
- How severe is CVE-2026-91813?
- High severity. CVSS v3 base score is 8.8 out of 10.