CVE-2023-7326 Epson Stylus SX510W Printer Remote Power Off DoS
A remote attacker can cause a denial of service on Epson Stylus SX510W printers by sending malformed requests to the embedded web interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-7326?
CVE-2023-7326 is a high-severity denial of service vulnerability in Seiko Epson Epson Stylus SX510W, published on 12 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-400
Which versions are affected by CVE-2023-7326?
How do I fix CVE-2023-7326?
No fix has been published for CVE-2023-7326 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-7326 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-7326 exists.
Sources
Also known as GHSA-hrm6-3g2j-qpvx.