CVE-2025-55307 is a security vulnerability identified in Foxit PDF and Editor for Windows versions prior to 13.2 and 2025 before 2025.2. The issue stems from a flaw in the handling of JavaScript within PDF files, specifically when a malicious PDF contains a crafted call to the search.query() function with a specially crafted cDIPath parameter (e.g., "/"). This crafted input triggers an out-of-bounds read in the internal path-parsing logic of the application. An out-of-bounds read can lead to unintended disclosure of memory contents, potentially leaking sensitive information, or cause memory corruption, which might be leveraged for further exploitation such as arbitrary code execution or application crashes. The vulnerability is triggered simply by opening a malicious PDF document, which is a common attack vector given the widespread use of PDFs for document exchange. Although no public exploits are currently known, the nature of the vulnerability suggests it could be exploited by attackers to compromise affected systems. The lack of a CVSS score indicates that the vulnerability is newly disclosed and pending formal severity assessment. However, the technical details imply a significant risk due to the possibility of information leakage and memory corruption without requiring user interaction beyond opening a file. The vulnerability affects a widely used PDF reader and editor, increasing the potential attack surface. Organizations relying on Foxit PDF products should be aware of this threat and prepare to apply patches or mitigations once available.

For European organizations, the impact of CVE-2025-55307 can be substantial. Many enterprises and public sector entities rely heavily on PDF documents for communication, contracts, and data exchange. An attacker exploiting this vulnerability could gain access to sensitive information stored in memory or cause application instability, potentially disrupting business operations. Information disclosure could lead to leakage of confidential data, intellectual property, or personal data protected under GDPR, resulting in regulatory penalties and reputational damage. Memory corruption could be a stepping stone for further exploitation, including remote code execution, which would allow attackers to gain control over affected systems. Sectors such as finance, government, healthcare, and legal services, which handle sensitive documents frequently, are particularly at risk. Additionally, the ease of exploitation by simply opening a malicious PDF increases the likelihood of successful attacks via phishing campaigns or malicious document distribution. The absence of known exploits currently provides a window for proactive defense, but organizations must act swiftly to mitigate potential risks.

1. Monitor Foxit Software advisories and apply security patches or updates immediately once they are released for versions 13.2 and 2025.2 or later. 2. Temporarily disable or restrict JavaScript execution within Foxit PDF Reader and Editor settings to reduce the attack surface, especially if JavaScript functionality is not essential for business processes. 3. Implement advanced email filtering and sandboxing solutions to detect and block malicious PDF attachments before they reach end users. 4. Educate employees on the risks of opening unsolicited or unexpected PDF attachments and encourage verification of document sources. 5. Employ endpoint protection solutions capable of detecting anomalous behavior related to PDF processing or memory corruption attempts. 6. Consider deploying application whitelisting and restricting the use of vulnerable PDF readers where possible, favoring updated or alternative PDF software with robust security. 7. Conduct regular security assessments and penetration testing to identify and remediate potential exploitation paths related to PDF handling.