CVE-2026-91803 Foxit PDF Editor/Reader - Privilege Escalation

Foxit PDF Editor/Reader contains a local privilege escalation caused by unsafe loading of dynamic-link libraries from user-writable directories during high-privilege operations, letting local attackers execute code with elevated privileges.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation, Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-427

Vendor fix

Update to the latest version of Foxit PDF Editor/Reader.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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