CVE-2026-91811
ZDI-26-740: Foxit PDF Reader PRC Stream Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Published Sep 23, 2026 · updated Oct 15, 2026 · foxit pdf editor
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-2026-91811.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
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-2026-91811.
Oct 15, 2026 · NIST NVD
Updated
A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s PRC parser due to insufficient validation of vertex indices in triangular fan texture meshes. Successful exploitation could result in memory corruption and an application crash.
Affected
- cpe foxit/pdf editorversion unspecified
- cpe foxit/pdf readerversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-91811
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-91811
30-day exploitation probability 0.1%
first.org - NIST NVDVulnerability recordCVE-2026-91811
A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s PRC parser due to insufficient validation of vertex indices in triangular fan texture meshes. Successful exploitation could result in memory corruption and an application crash.
nvd.nist.gov - Zero Day InitiativeCoordinated disclosureZDI-26-740
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-2026-91811.
zerodayinitiative.com