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CVE-2026-23767

Epson Sb-h50 Firmware authentication bypass

9.8 CRITICALEPSS 0.46%
  1. Published5 Mar 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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Epson Sb-h50 Firmwareall versions
Epson Tm-h6000v Firmwareall versions
Epson Tm-l100 Firmwareall versions
Epson Tm-m10 Firmwareall versions
Epson Tm-m30 Firmwareall versions
Epson Tm-m30ii Firmwareall versions
Epson Tm-m30ii-h Firmwareall versions
Epson Tm-m30iii Firmwareall versions
Epson Tm-m30iii-h Firmwareall versions
Epson Tm-m30ii-s Firmwareall versions
Epson Tm-m30ii-sl Firmwareall versions
Epson Tm-m55 Firmwareall versions
Epson Tm-p20 Firmwareall versions
Epson Tm-p20ii Firmwareall versions
Epson Tm-p60ii Firmwareall versions
Epson Tm-p80 Firmwareall versions
Epson Tm-p80ii Firmwareall versions
Epson Tm-t20ii Firmwareall versions
Epson Tm-t20iii Firmwareall versions
Epson Tm-t88vi Firmwareall versions
Epson Tm-t88vii Firmwareall versions
Epson Tm-t88vi-ihub Firmwareall versions
Epson Ub-e04 Firmwareall versions
Epson Ub-r04 Firmwareall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-23767 being actively exploited?

CVE-2026-23767 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.46%.

How severe is CVE-2026-23767?

CVE-2026-23767 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.46% probability of exploitation.

Which products are affected by CVE-2026-23767?

Affected products include Epson Sb-h50 Firmware, Epson Tm-h6000v Firmware, Epson Tm-l100 Firmware, Epson Tm-m10 Firmware, Epson Tm-m30 Firmware, and 19 more.

How do I fix CVE-2026-23767?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-23767 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.