CVE-2025-1268: Critical Out-of-Bounds Write Vulnerability in Canon Generic Plus Printer Drivers

Vulnerability Summary

• CVE ID: CVE-2025-1268

• Severity: Critical (CVSS 3.1 Score: 9.4)

• Attack Vector: Network

• Privileges Required: None

• User Interaction: None

• Impact: Remote Code Execution (RCE), potential full system compromise

Affected Products

The following Canon Generic Plus printer drivers are affected:​Daily CyberSecurity+12CinchOps, Inc.+12SecurityVulnerability.io+12

These drivers are commonly used across various Canon printer models, including production printers, office multifunction devices, small office multifunction devices, and laser printers. ​Daily CyberSecurity+3The Cyber Express+3CinchOps, Inc.+3

How the Exploit Works

The vulnerability resides in the EMF (Enhanced Metafile) Recode processing functionality of the affected printer drivers. An out-of-bounds write issue (CWE-787) occurs when processing specially crafted EMF files. This flaw allows an attacker to write data beyond the allocated memory buffer, potentially overwriting critical system data or injecting malicious code. ​X (formerly Twitter)+13CinchOps, Inc.+13TheSecMaster+13The Cyber Express+10TheSecMaster+10CinchOps, Inc.+10

Exploitation can be achieved remotely over a network without requiring user interaction or authentication, making it a particularly dangerous vulnerability. ​CinchOps, Inc.

Conceptual Example Code

While specific exploit code is not publicly available, a conceptual example involves an attacker crafting a malicious EMF file designed to trigger the out-of-bounds write vulnerability. This file, when processed by the vulnerable printer driver, could execute arbitrary code on the system.​Wind River Support Network+3TheSecMaster+3CinchOps, Inc.+3ASEC+7CinchOps, Inc.+7SecurityVulnerability.io+7

Potential Risks

• Execution of arbitrary code with the privileges of the user running the printer driver​TheSecMaster+1CinchOps, Inc.+1

• Unauthorized access to sensitive information​

• System instability or crashes​Ameeba+7TheSecMaster+7SecurityVulnerability.io+7

• Potential for further exploitation or lateral movement within the network​

Mitigation Recommendations

• Update Printer Drivers: Canon has released updated versions of the affected drivers (Version 3.15) that address this vulnerability. Users should download and install these updates from their local Canon sales representative websites. ​Feedly+4CinchOps, Inc.+4Daily CyberSecurity+4

• Isolate Vulnerable Systems: If immediate patching isn’t possible, consider isolating systems with vulnerable printer drivers from your network to prevent potential exploitation.​CinchOps, Inc.+1TheSecMaster+1

• Implement Network Segmentation: Segment your network to limit the potential attack surface and prevent lateral movement in case of a successful exploit.​TheSecMaster

• Monitor for Suspicious Activities: Continuously monitor for any suspicious network activities related to printer drivers.​TheSecMaster

Conclusion

CVE-2025-1268 is a critical vulnerability in Canon’s Generic Plus printer drivers that allows for remote code execution without user interaction. Given the widespread use of these drivers across various Canon printer models, organizations should prioritize updating to the latest driver versions to mitigate potential risks.​Daily CyberSecurity+12Feedly+12SecurityVulnerability.io+12

References

• NVD – CVE-2025-1268

• Canon PSIRT Advisory CP2025-003

• Canon USA Service Notice

• The Cyber Express Article on CVE-2025-1268

• TheSecMaster Guide on Fixing CVE-2025-1268