CVE-2026-23767

State: Published
Severity: 9.8 Critical
Published: Mar 5, 2026
Updated: Mar 6, 2026
Reserved: Jan 16, 2026

Description

ESC/POS, a printer control language designed by Seiko Epson Corporation, lacks mechanisms for user authentication and command authorization, does not provide controls to restrict sources or destinations of network communication, and transmits commands without encryption or integrity protection.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-306 Missing authentication for critical function

Affected Products

Product	Versions
ESC/POSSeiko Epson Corporation	All products implementing ESC/POSAffected

References

https://www.epson.jp/support/misc_t/260305_oshirase.htm
https://download4.epson.biz/sec_pubs/bs/pdf/IP_Filtering_Guide_en_revA.pdf
https://jvn.jp/en/ta/JVNTA97995322/

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