Denial of Service Vulnerability in Epson Stylus SX510W Printer
CVE-2023-7326

8.7HIGH

Key Information:

Vendor

Seiko Epson

Status
Epson Stylus Sx510w
Vendor
CVE Published:
12 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-7326?

The Epson Stylus SX510W printer contains a vulnerability in its embedded web management service that inadequately handles consecutive ampersand characters in query parameters. An attacker can exploit this vulnerability by sending a specially crafted request to the device, resulting in incorrect input parsing or memory management. This can lead to the printer process crashing unexpectedly or even powering down entirely, thereby creating a denial-of-service scenario for users.

Affected Version(s)

Epson Stylus SX510W 0 <= 2023-05-13

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-7326 - Proof of Concept

References

https://www.exploit-db.com/exploits/51441
exploit
https://www.epson.eu/en_EU/support/sc/epson-stylus-sx510w...
product
https://www.vulncheck.com/advisories/epson-stylus-printer...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Rafael Pedrero
JSON
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CVE-2023-7326 : Denial of Service Vulnerability in Epson Stylus SX510W Printer