CVE-2023-7326: Seiko Epson Epson Stylus SX510W

High severity, CVSS 8.7. EPSS: 0.6% chance of exploitation in the next 30 days.

The Epson Stylus SX510W embedded web management service fails to properly handle consecutive ampersand characters in query parameters when accessing /PRESENTATION/HTML/TOP/INDEX.HTML. A remote attacker can send a malformed request that triggers improper input parsing or memory handling, resulting in the printer process shutting down or powering off, causing a denial of service condition.

Affected products

• Seiko Epson Epson Stylus SX510W: up to and including 2023-05-13

Published 2025-11-12. Last modified 2026-06-17.