CVE-2026-3780

Foxit PDF Editor/Reader Installer Uncontrolled Search Path Privilege Escalation

The application's installer runs with elevated privileges but resolves system executables and DLLs using untrusted search paths that can include user-writable directories, allowing a local attacker to place malicious binaries with the same names and have them loaded or executed instead of the legitimate system files, resulting in local privilege escalation.

Affected

Foxit Software Inc. · Foxit PDF Reader · Foxit PDF Editor

CVSS v3.1 NVD

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 CNA

7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

EPSS

0.17% chance of exploitation in the next 30 days, 7th percentile

Published

2026-04-01

Updated

2026-04-02

Proof-of-concept exploits (1)

• Paradoxis/CVE-2026-5723916★ · 2026-07-27

Security advisories

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

References

• CVE Record
• NVD entry

Related

• CVE-2026-3775
• CVE-2026-57239