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Vulnerabilities

Vulnerability · CVE-2025-66635

Stack-based buffer overflow vulnerability exists in SEIKO EPSON Web Config.

Published Dec 16, 2025 · catalog updated Dec 22, 2025 · SEIKO EPSON CORPORATION Web Config

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-66635. EPSS is 0.53%. Act only if a listed version of SEIKO EPSON CORPORATION Web Config is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.53%
Remediation
Vendor / distro source
Affected products
vendor SEIKO EPSON CORPORATION Web Config See the information/details provided by the vendor

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].

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor SEIKO EPSON CORPORATION Web Config See the information/details provided by the vendorSee the information/details provided by the vendor

How to fix CVE-2025-66635

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-66635. EPSS is 0.53%. Act only if a listed version of SEIKO EPSON CORPORATION Web Config is installed.

Which versions are affected?

Compare what you have installed with SEIKO EPSON CORPORATION Web Config See the information/details provided by the vendor See the information/details provided by the vendor. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.53%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 16, 2025 · EUVD

    Detected

    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].

  2. Dec 22, 2025 · EUVD

    Updated

    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].

Sources

  • CVE.orgVulnerability recordCVE-2025-66635

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66635

    30-day exploitation probability 0.53%

    first.org
  • EUVDVulnerability recordEUVD-2025-203525

    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].

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgNov 2, 2026
  • EUVDNov 1, 2026