CVE-2026-91813 Foxit PDF Editor/Reader - Privilege Escalation

Foxit PDF Editor/Reader contains a privilege escalation vulnerability caused by insufficient file locking and integrity validation in the update mechanism, letting local attackers execute arbitrary code with elevated privileges, exploit requires local access.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.09% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Remote Code Execution, Privilege Escalation
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-367

Vendor fix

Update to the latest version with fixed update mechanism.

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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