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Vulnerability record · CVE-2026-23767 · published 5 March 2026

CVE-2026-23767: Epson sb-h50 firmware missing authentication for critical function vulnerability

Epson · Sb H50 Firmware

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.

9.8 CVSS 3.1 Critical EPSS 0.45% · top 63.6% CWE-306 · Missing authentication for critical function
9.8CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
24Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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

Affected products

24 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://download4.epson.biz/sec_pubs/bs/pdf/IP_Filtering_Guide_en_revA.pdf Product
https://jvn.jp/en/ta/JVNTA97995322/ Third Party Advisory
https://www.epson.jp/support/misc_t/260305_oshirase.htm Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-23767), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.