PT-2026-23215 · Seiko Epson · Esc/Pos

Futileskills + 1 · Published 2026-03-05 · Updated 2026-03-28 · CVE-2026-23767

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions ESC/POS (affected versions not specified)

Description ESC/POS, a printer control language developed by Seiko Epson Corporation, does not include user authentication or command authorization features. It also lacks controls to limit network communication sources and destinations and does not encrypt or protect the integrity of transmitted commands.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-23767

Affected Products

Esc/Pos

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-23767 · Security Note
• https://epson.jp/support/misc_t/260305_oshirase.htm · Vendor Advisory
• https://twitter.com/CVEnew/status/2030755407988240868 · Twitter Post
• https://t.me/cveNotify/154486 · Telegram Post
• https://jvn.jp/en/ta/JVNTA97995322 · Note
• https://twitter.com/DFIR_Radar/status/2037745142262616536 · Twitter Post
• https://t.me/cveNotify/154852 · Telegram Post
• https://t.me/CVEtracker/46413 · Telegram Post
• https://download4.epson.biz/sec_pubs/bs/pdf/IP_Filtering_Guide_en_revA.pdf · Note
• https://reddit.com/r/SecOpsDaily/comments/1s5i4nj/metasploit_wrapup_03272026 · Reddit Post