---
id: CVE-2025-66635
title: Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config
summary: >-
  Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config.
  Specially crafted data input by a logged-in user may execute arbitrary code.
  As for the details of the affected products and versions, see the information
  provid…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-121
published: '2025-12-16'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T19:10:00.160'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66635'
references:
  - url: 'https://epson.com/Support/wa00971'
    label: vultures@jpcert.or.jp
  - url: 'https://jvn.jp/en/jp/JVN51846148/'
    label: vultures@jpcert.or.jp
  - url: 'https://www.epson.jp/support/misc_t/251216_oshirase.htm'
    label: vultures@jpcert.or.jp
tags:
  - nvd
epss: 0.00534
epssPercentile: 0.43161
ingestedAt: '2026-10-07T20:46:46.950Z'
---

## Overview

Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config. Specially crafted data input by a logged-in user may execute arbitrary code. As for the details of the affected products and versions, see the information provided by the vendor under [References].

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.