CVE-2023-38556: Epson Ep-801a Firmware

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Improper input validation vulnerability in SEIKO EPSON printer Web Config allows a remote attacker to turned off the printer. [Note] Web Config is the software that allows users to check the status and change the settings of SEIKO EPSON printers via a web browser. Web Config is pre-installed in some printers provided by SEIKO EPSON CORPORATION. For the details of the affected product names/model numbers, refer to the information provided by the vendor.

Affected products

• Epson Ep-801a Firmware: affected versions not specified
• Epson Ep-802a Firmware: affected versions not specified
• Epson Ep-901a Firmware: affected versions not specified
• Epson Ep-901f Firmware: affected versions not specified
• Epson Ep-902a Firmware: affected versions not specified
• Epson Pa-TCU1 Firmware: affected versions not specified
• Epson Pm-t960 Firmware: affected versions not specified
• Epson Pm-t990 Firmware: affected versions not specified
• Epson Px-201 Firmware: affected versions not specified
• Epson Px-502a Firmware: affected versions not specified
• Epson Px-601f Firmware: affected versions not specified
• Epson Px-602f Firmware: affected versions not specified

Published 2023-08-02. Last modified 2026-06-17.