What is CVE-2025-66635?

CVE-2025-66635 is a high-severity vulnerability in Seiko Epson Corporation Web Config, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2025-12-16.

How severe is CVE-2025-66635?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in Seiko Epson Corporation Web Config

CVE-2025-66635

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].

Vulnerability class: Buffer Overflow

EPSS: 0.005 (37.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Seiko Epson Corporation Web Config — versions See the information/details provided by the vendor

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

Frequently asked questions

What is CVE-2025-66635?: CVE-2025-66635 is a high-severity vulnerability in Seiko Epson Corporation Web Config, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2025-12-16.
How severe is CVE-2025-66635?: High severity. CVSS v3 base score is 7.2 out of 10.