Advisory Details

February 5th, 2026

(Pwn2Own) Lexmark CX532adwe getCFFNames Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-26-066
ZDI-CAN-28333

CVE ID CVE-2025-65079
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 CX532adwe
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Lexmark CX532adwe printers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the getCFFNames function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. 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://www.lexmark.com/content/dam/support/collateral/security-alerts/CVE-2025-65079.pdf
DISCLOSURE TIMELINE
  • 2025-11-06 - Vulnerability reported to vendor
  • 2026-02-05 - Coordinated public release of advisory
  • 2026-02-05 - Advisory Updated
CREDIT Team ANHTUD
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