CVE-2026-91789
ZDI-26-721: Foxit PDF Reader U3D File Parsing Integer Overflow Remote Code Execution Vulnerability
Published Sep 23, 2026
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-91789.
Timeline
Detection, updates, and resolution for this record.
Sep 23, 2026 · Catalog
Detected
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-91789.
Sources
- CVE.orgCVE-2026-91789
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-91789
30-day exploitation probability 0.2%
first.org - Zero Day InitiativeZDI-26-721
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-91789.
zerodayinitiative.com