Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDFsam Enhanced. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of App objects. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

06/04/25 - ZDI reported the vulnerability to the vendor
06/04/25 – the vendor acknowledged the receipt of the report
09/24/25 - ZDI asked for updates
11/10/25 - ZDI asked for updates
12/04/25 – ZDI notified the vendor of the intention to publish the case as a 0-day advisory on 12/11/25

-- Mitigation: Given the nature of the vulnerability, the only salient mitigation strategy is to restrict interaction with the product

• 2025-06-04 - Vulnerability reported to vendor
• 2025-12-11 - Coordinated public release of advisory
• 2025-12-11 - Advisory Updated