--- title: "CVE-2026-91803: Foxit PDF Editor/Reader - Privilege Escalation" description: "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." url: https://panop.io/threat-heartbeat/CVE-2026-91803/ --- # 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91803) ## 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](https://cwe.mitre.org/data/definitions/427.html) ## 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 - [https://nvd.nist.gov/vuln/detail/CVE-2026-91803](https://nvd.nist.gov/vuln/detail/CVE-2026-91803) - [https://www.foxit.com/support/security-bulletins.html](https://www.foxit.com/support/security-bulletins.html) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)