{"id":"CVE-2026-27778","aliases":["EUVD-2026-9943","GHSA-pccv-vgjf-95g3"],"status":"published","title":"ePower epower.ie Improper Restriction of Excessive Authentication Attempts","description":"The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00663,"percentile":0.52208,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-307"],"published":"2026-03-05T23:36:26Z","modified":"2026-06-17T10:27:40Z","exploits":[{"source":"pocgithub","id":"KimJ6/PoC-Simulator_CVE-2026-27778","title":"KimJ6/PoC-Simulator_CVE-2026-27778","date":"2026-05-04","url":"https://github.com/KimJ6/PoC-Simulator_CVE-2026-27778"}],"products":[{"vendor":"epower","product":"epower.ie"}],"references":[{"url":"https://epower.ie/support/","tags":["Product"]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-07","tags":["US Government Resource"]},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-062-07.json","tags":["Product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27778"},{"url":"https://epower.ie/support"},{"url":"https://github.com/advisories/GHSA-pccv-vgjf-95g3"}],"sources":{"cve":[{"id":"CVE-2026-27778","title":"ePower epower.ie Improper Restriction of Excessive Authentication Attempts","description":"The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.","status":"published","published":"2026-03-05T23:36:26.523Z","modified":"2026-03-09T17:26:05.678Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:19:49.199185Z"}],"euvd":[{"id":"EUVD-2026-9943","description":"The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.","status":"published","published":"2026-03-05T23:36:26Z","modified":"2026-03-09T17:26:05Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:48:07.128863Z"}],"ghsa":[{"id":"GHSA-pccv-vgjf-95g3","title":"The WebSocket Application Programming Interface lacks restrictions on the number of...","description":"The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.","status":"published","published":"2026-03-06T00:31:35Z","modified":"2026-03-06T00:31:41Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T15:06:28.65977Z"}],"nvd":[{"id":"CVE-2026-27778","description":"The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.","status":"published","published":"2026-03-06T00:16:10.96Z","modified":"2026-06-17T10:27:40.523Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:12:07.852448Z"}]}}