Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Soda PDF Desktop. 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 parsing of PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

06/19/25 - ZDI reported the vulnerability to Avanquest’s support team
07/01/25 – the vendor acknowledged the receipt of the report
08/11/25 - ZDI asked for updates
08/12/25 – the vendor acknowledged that the report was escalated to the proper department
11/10/25 - ZDI asked for updates
11/21/25 – the vendor indicated that they don't offer bounties or rewards
11/21/25 - ZDI confirmed not accepting any rewards or bounties and asked for the expected fix date
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

• 2025-06-19 - Vulnerability reported to vendor
• 2025-12-11 - Coordinated public release of advisory
• 2025-12-11 - Advisory Updated