CVE-2023-38556

Name: CVE-2023-38556
Creator: NVD / NIST
Published: 2023-08-02T08:15:09.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2023-38556 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper input validation vulnerability in SEIKO EPSON printer Web Config allows a remote attacker to turned off the printer. [Note] Web Config is the software that allows users to check the status and change the settings of SEIKO EPSON printers via a web browser. Web Config is pre-installed in some printers provided by SEIKO EPSON CORPORATION. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

Improper input validation vulnerability in SEIKO EPSON printer Web Config allows a remote attacker to turned off the printer. [Note] Web Config is the software that allows users to check the status and change the settings of SEIKO EPSON printers via a web browser. Web Config is pre-installed in some printers provided by SEIKO EPSON CORPORATION. For the details of the affected product names/model numbers, refer to the information provided by the vendor.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.65%

46.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Epson	Ep-801a Firmware	All versions
Epson	Ep-802a Firmware	All versions
Epson	Ep-901a Firmware	All versions
Epson	Ep-901f Firmware	All versions
Epson	Ep-902a Firmware	All versions
Epson	Pa-Tcu1 Firmware	All versions
Epson	Pm-T960 Firmware	All versions
Epson	Pm-T990 Firmware	All versions
Epson	Px-201 Firmware	All versions
Epson	Px-502a Firmware	All versions
Epson	Px-601f Firmware	All versions
Epson	Px-602f Firmware	All versions

References

https://jvn.jp/en/jp/JVN61337171/Third Party Advisory
https://www.epson.jp/support/misc_t/230802_oshirase.htmVendor Advisory
https://jvn.jp/en/jp/JVN61337171/Third Party Advisory
https://www.epson.jp/support/misc_t/230802_oshirase.htmVendor Advisory

Timeline

Published: Aug 2, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-38556?

How severe is CVE-2023-38556?

CVE-2023-38556 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2023-38556?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-38556?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST