CVE-2026-91803 — HIGH (8.8)

Q: How severe is CVE-2026-91803?

CVE-2026-91803 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-91803?

Check the references section above for vendor advisories and patch information. Affected products include: Foxit Pdf Editor, Foxit Pdf Reader, Microsoft Windows.

Vulnerability Description

A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of dynamic-link libraries from a user-writable directory during high-privilege operations. A local attacker could exploit this issue to execute code with elevated privileges.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Foxit	Pdf Editor	<= 13.2.5.63482
Foxit	Pdf Reader	<= 2026.2.0.39747
Microsoft	Windows	-

Related Weaknesses (CWE)

CWE-427

References

https://www.foxit.com/support/security-bulletins.htmlVendor Advisory

FAQ

What is CVE-2026-91803?

CVE-2026-91803 is a vulnerability with a CVSS score of 8.8 (HIGH). A local privilege escalation vulnerability exists in the updater of Foxit PDF Editor/Reader due to unsafe loading of dynamic-link libraries from a user-writable directory during high-privilege operati...

How severe is CVE-2026-91803?

CVE-2026-91803 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-91803?

Check the references section above for vendor advisories and patch information. Affected products include: Foxit Pdf Editor, Foxit Pdf Reader, Microsoft Windows.