CVE-2025-66635
Seiko Epson Web Config Stack-based Buffer Overflow Vulnerability
Description
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].
INFO
Published Date :
Dec. 16, 2025, 7:15 a.m.
Last Modified :
Oct. 7, 2026, 7:10 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.0 | HIGH | ede6fdc4-6654-4307-a26d-3331c018e2ce | ||||
| CVSS 3.0 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | ede6fdc4-6654-4307-a26d-3331c018e2ce | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update SEIKO EPSON Web Config to the latest version.
- Apply vendor-provided security patches immediately.
- Review vendor advisories for affected products and versions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-66635.
| URL | Resource |
|---|---|
| https://epson.com/Support/wa00971 | |
| https://jvn.jp/en/jp/JVN51846148/ | |
| https://www.epson.jp/support/misc_t/251216_oshirase.htm |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-66635 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-66635
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-66635 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-66635 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 07, 2026
Action Type Old Value New Value Added Translation Title: Web Config de SEIKO EPSON CORPORATION, Description: Existe una vulnerabilidad de desbordamiento de búfer basado en pila en SEIKO EPSON Web Config. Una entrada de datos especialmente diseñada por un usuario que ha iniciado sesión puede ejecutar código arbitrario. En cuanto a los detalles de los productos y versiones afectados, consulte la información proporcionada por el proveedor en [Referencias]. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'SEIKO EPSON CORPORATION', 'product': 'Web Config', 'versions': [{'status': 'affected', 'version': 'See the information/details provided by the vendor'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-66635', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2025-12-16T21:32:37.175744Z'} -
CVE Modified by [email protected]
Dec. 22, 2025
Action Type Old Value New Value Added Reference https://epson.com/Support/wa00971 -
New CVE Received by [email protected]
Dec. 16, 2025
Action Type Old Value New Value Added Description 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]. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-121 Added Reference https://jvn.jp/en/jp/JVN51846148/ Added Reference https://www.epson.jp/support/misc_t/251216_oshirase.htm