[ CVE-2026-91814 · Published 23 Sep 2026 ]
Vulnerability in Foxit Software Inc. Foxit PDF Editor
CVSS 5.3
EPSS <1%1 agency advisoryNo fix listed yet
[ Description ]Official description
A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ Advisories ]Government CERT advisories
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CERT-FRCERTFR-2026-AVI-1214
Multiple vulnerabilities in FoxIT products Translated from French
Multiple vulnerabilities have been discovered in FoxIT products. Some of them allow an attacker to cause arbitrary code execution, privilege escalation and a breach of data confidentiality.