CVE-2026-91817

Foxit PDF Editor/Reader AcroForm Out-of-Bounds Read Remote Code Execution Vulnerability

State: Published
Severity: 6.1 Medium
Published: Sep 23, 2026
Updated: Sep 23, 2026
Reserved: Sep 15, 2026

Description

A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of wide strings in embedded PDF JavaScript. Insufficient validation of string-deletion ranges can cause an integer underflow, resulting in an out-of-bounds read and application crash.

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H	Foxit

Weaknesses

CWE-125 Out-of-bounds Read (CWE-125)

Affected Products

Product	Versions
Foxit PDF EditorFoxit Software Inc.	Versions 2026.2 and earlierAffected Versions 14.0.7 and earlierAffected Versions 13.2.6 and earlierAffected
Foxit PDF ReaderFoxit Software Inc.	Versions 2026.2 and earlierAffected

References

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

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