CVE-2025-7698 is a medium severity vulnerability classified as CWE-125 (Out-of-bounds Read) found in Canon Inc.'s Generic Plus printer drivers, including PCL6, UFR II, LIPS4, LIPSLX, PS, and others, affecting versions 3.30 and earlier. The flaw occurs due to improper bounds checking during the processing of print jobs, which can cause the driver to read memory beyond the allocated buffer. This can lead to unauthorized disclosure of sensitive information residing in adjacent memory areas. The vulnerability requires network access (AV:N), has high attack complexity (AC:H), does not require privileges (PR:N), but does require user interaction (UI:R), and affects confidentiality (C:H) with no impact on integrity (I:N) and low impact on availability (A:L). Although no exploits have been reported in the wild, the vulnerability poses a risk especially in environments where Canon Generic Plus drivers are widely deployed. The affected drivers are commonly used in enterprise and government printing infrastructure, making the vulnerability relevant for organizations with large-scale print services. The lack of an available patch at the time of publication necessitates interim mitigations such as restricting network access to print servers and monitoring for suspicious print job activity. This vulnerability underscores the importance of secure coding practices in device drivers, particularly those handling complex input data like print jobs.

The primary impact of CVE-2025-7698 is unauthorized disclosure of sensitive information due to out-of-bounds memory reads in Canon Generic Plus printer drivers. This can lead to leakage of confidential data processed or stored in memory adjacent to the vulnerable buffer. While the vulnerability does not allow modification of data or disruption of printer availability, the confidentiality breach can have serious consequences in environments handling sensitive documents, such as government agencies, financial institutions, and healthcare providers. Exploitation requires user interaction and network access, which limits the attack surface but does not eliminate risk in large organizations with many users and networked printers. The medium CVSS score reflects moderate risk, but the potential for information leakage in critical environments elevates the importance of addressing this issue promptly. Organizations relying heavily on Canon printing solutions may face compliance and reputational risks if sensitive data is exposed through this vulnerability.

1. Monitor Canon's official channels for patches addressing CVE-2025-7698 and apply updates immediately upon release. 2. Until patches are available, restrict network access to printers and print servers using firewalls and network segmentation to limit exposure. 3. Implement strict access controls and authentication mechanisms for printer management interfaces and print job submission. 4. Educate users to avoid interacting with suspicious print jobs or unsolicited print requests to reduce the risk of user interaction exploitation. 5. Employ network monitoring and intrusion detection systems to detect anomalous print job activity or attempts to exploit the vulnerability. 6. Consider temporarily disabling or replacing vulnerable printer drivers with alternative drivers that do not exhibit this vulnerability, if feasible. 7. Conduct regular security assessments of print infrastructure to identify and remediate other potential weaknesses. 8. Maintain an inventory of all Canon printer drivers in use to ensure comprehensive coverage of mitigation efforts.