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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "esc_pos", "vendor": "epson"}], "analysis": {"en": {"generated_at": "2026-04-17T12:56:56.157096+00:00", "value": {"mitigation_remediation": ["Apply firmware updates that add authentication, command authorization, and encryption to the ESC/POS interface, if such an update has been released by Epson.", "Configure firewalls to allow access to the printer only from trusted IP addresses and block unsolicited inbound connections to its ESC/POS service.", "Segregate printer devices onto a dedicated VLAN or network segment and enforce strict access controls to limit communication to authorized devices.", "If no firmware fix is available, use packet filtering or deep\u2011packet inspection to block unauthorized ESC/POS commands and restrict usage to locally connected printers only."], "summary": {"action": "Patch Firmware", "impact": "Unauthorized printing and denial of service"}, "threat_synthesis": {"affected_systems": "This vulnerability affects Epson\u2019s ESC/POS printers, including the SB\u2011H50, TM\u2011H6000V, TM\u2011L100, TM\u2011M10, and the TM\u2011M30 series (M30, M30II, M30III), the TM\u2011M55, the TM\u2011P20 series (P20, P20II), the TM\u2011P60II, the TM\u2011P80 series (P80, P80II), the TM\u2011T20 series (T20II, T20III), the TM\u2011T88VI, the TM\u2011T88VII, the UB\u2011E04, and the UB\u2011R04 models. All of these devices run firmware that exposes raw ESC/POS command interfaces without authentication or encryption, as reflected in the CPE entries provided.", "description_and_impact": "ESC/POS, a printer control language used by Epson, lacks authentication, command authorization, controls over data origin and destination, and it transmits commands without encryption or integrity protection. An attacker who can reach the printer\u2019s network interface could send arbitrary ESC/POS commands, resulting in unauthorized printing or denial of service. The description does not indicate that the attacker can execute firmware code or system code, only that commands are accepted without checks.", "risk_and_exploitability": "The CVSS base score of 9.8 classifies this as a high severity vulnerability, but the EPSS score is below 1\u202f%, indicating very low current exploitation probability. The vulnerability is not listed in the CISA KEV catalog, suggesting no widely known exploitation. Attackers are likely to target the ESC/POS service over the network; while the specific port number is not stated in the CVE description, it is inferred that the common port for raw printing (often TCP\u202f9100) is used, and an attacker could inject malicious commands over an untrusted network."}}}}, "created": "2026-03-06T15:17:47.192740+00:00", "title": "Unrestricted ESC/POS Commands Enable Unauthorized Printing", "updated": "2026-04-17T13:00:12.022236+00:00", "vendors": ["epson", "epson$PRODUCT$esc_pos"]}