(Pwn2Own) Lexmark CX331adwe loadCFFdata Type Confusion Remote Code Execution Vulnerability

April 9th, 2025
ZDI-25-217 ZDI-CAN-25539

CVE ID

CVE-2024-11344

CVSS Score

8.8 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Lexmark

Affected Products

CX331adwe

Vulnerability Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Lexmark CX331adwe printers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the loadCFFdata method. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the pagemaker user.

Additional Details

Lexmark has issued an update to correct this vulnerability. More details can be found at:
https://support.lexmark.com/content/dam/support/collateral/security-alerts/CVE-2024-11344.pdf

Disclosure Timeline

  • 2024-12-02 - Vulnerability reported to vendor
  • 2025-04-09 - Coordinated public release of advisory
  • 2025-04-09 - Advisory Updated

Credit

Team Viettel

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