CVE-2024-9249 is an out-of-bounds read vulnerability categorized under CWE-125 found in Foxit PDF Reader version 2024.2.2.25170. The vulnerability stems from inadequate validation of user-supplied data during the parsing of PDF files, which allows an attacker to read memory beyond the bounds of an allocated buffer. This memory corruption can be leveraged to execute arbitrary code remotely in the context of the current process. Exploitation requires user interaction, such as opening a maliciously crafted PDF document or visiting a malicious webpage that triggers the vulnerable PDF parsing functionality. The vulnerability was assigned by the Zero Day Initiative (ZDI) as ZDI-CAN-24301 and has a CVSS v3.0 score of 7.8, reflecting high severity with high impact on confidentiality, integrity, and availability. The attack vector is local (AV:L) requiring low attack complexity (AC:L), no privileges (PR:N), but user interaction (UI:R). The scope is unchanged (S:U). No patches have been linked yet, and no known exploits are reported in the wild as of the publication date. This vulnerability poses a significant risk because it can lead to remote code execution, potentially allowing attackers to take control of affected systems.

The vulnerability allows remote attackers to execute arbitrary code on systems running the affected Foxit PDF Reader version, potentially leading to full system compromise depending on user privileges. Confidentiality is at risk as attackers may access sensitive data in memory. Integrity and availability are also impacted since arbitrary code execution can modify or delete files, install malware, or disrupt system operations. The requirement for user interaction limits mass exploitation but targeted attacks, such as spear phishing with malicious PDFs, are feasible. Organizations relying on Foxit PDF Reader in sensitive environments face risks of data breaches, ransomware deployment, or lateral movement within networks. The lack of known exploits in the wild currently reduces immediate risk but also means attackers may develop exploits soon after disclosure. The vulnerability affects endpoint security posture and could be leveraged in multi-stage attacks.

Organizations should monitor Foxit’s official channels for patches addressing CVE-2024-9249 and apply updates promptly once available. Until a patch is released, restrict or disable the use of Foxit PDF Reader version 2024.2.2.25170, especially in high-risk environments. Employ application whitelisting and sandboxing to limit the impact of malicious PDF files. Educate users to avoid opening PDFs from untrusted sources or clicking suspicious links. Use endpoint detection and response (EDR) tools to monitor for anomalous behavior related to PDF processing. Network-level protections such as email filtering and web content scanning can help block malicious PDFs before reaching users. Consider deploying alternative PDF readers with no known vulnerabilities if immediate patching is not possible. Regularly back up critical data to mitigate potential ransomware or destructive attacks stemming from exploitation.