CVE-2026-22542

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{}

{"analysis": {"en": {"generated_at": "2026-04-18T08:09:18.290342+00:00", "value": {"mitigation_remediation": ["Disable or restrict the Telnet service to only trusted internal hosts or move the service to a protected subnet.", "Apply any vendor firmware or software update that addresses this denial\u2011of\u2011service flaw as soon as it is released.", "Replace Telnet with a secure alternative such as SSH, which encrypts traffic and offers better authentication.", "Monitor system logs for abnormal Telnet activity and configure alerts for multiple concurrent connections to detect potential abuse."], "summary": {"action": "Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "The affected products are EFACEC QC 60, QC 90 and QC 120. No specific firmware or software version information is provided.", "description_and_impact": "An internal attacker can cause a denial of service by opening two simultaneous Telnet sessions on the device. The flaw leads to a resource exhaustion condition that renders the service unresponsive; it is identified as CWE\u2011400.", "risk_and_exploitability": "The vulnerability has a high CVSS score of 9.2, indicating severe impact. The EPSS score is below 1 percent, suggesting low likelihood of exploitation in the wild, and the issue is not listed in the CISA KEV catalog. Exploitation requires access to the device\u2019s internal network and the ability to open multiple Telnet connections, so an attacker must be locally connected or within a trusted segment."}}}}, "created": "2026-01-08T09:48:25.812210+00:00", "updated": "2026-04-18T08:15:15.890144+00:00", "vendors": ["efacec", "efacec$PRODUCT$qc_120", "efacec$PRODUCT$qc_60", "efacec$PRODUCT$qc_90"]}