{"id":"CVE-2026-41021","kind":"vulnerability","aliases":["CVE-2026-41021"],"related":[],"title":"Eaton easyE4: weak password policy lets captured hashes be cracked","description":"Eaton easyE4 uses an insufficiently strong password policy. An attacker who obtains a password hash, including through CVE-2026-41020, could perform an offline password-guessing attack and potentially recover user credentials.","summary":"Eaton easyE4 devices enforce an insufficiently strong password policy. An attacker who obtains a password hash, for example through CVE-2026-41020, can guess passwords offline and may recover user credentials.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["easye4","eaton","industrial-control","infrastructure","self-hosted"],"not_affected_if":[],"how_to_check":"- unknown","fix":"- unknown","status":"open","published_at":"2026-10-27T12:17:07+00:00","first_seen_at":"2026-10-27T12:31:38+00:00","triaged_at":"2026-10-27T12:32:01+00:00","updated_at":"2026-10-27T12:32:01+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-10-27T12:32:01Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"unknown","title":"Eaton easyE4: weak password policy lets captured hashes be cracked","impact":"high","summary":"Eaton easyE4 devices enforce an insufficiently strong password policy. An attacker who obtains a password hash, for example through CVE-2026-41020, can guess passwords offline and may recover user credentials.","category":"infrastructure","nicknames":[],"who_cares":["eaton","easye4","industrial-control","self-hosted"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Attacker recovers user passwords from captured hashes offline","analyst_note":"Find the Eaton advisory for affected firmware versions, the fixed version, and the password policy settings; the NVD entry alone gives no versions or fix.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Operators of Eaton easyE4 devices. The sources do not say which firmware versions are affected or which password settings are configurable. unknown","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000526,"input_tokens":3273,"output_tokens":398,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A,46B,75C '-41020':47B,76C '-41021':13A,16A 'attack':36B,66C,84C 'captur':7A 'control':21B 'could':77C 'crack':10A 'credenti':56B,89C 'cve':11A,14A,45B,74C 'devic':28B 'easye4':2A,17B,27B,58C 'eaton':1A,18B,26B,57C 'enforc':29B 'exampl':43B 'guess':49B,83C 'hash':8A,41B,71C 'host':25B 'includ':72C 'industri':20B 'industrial-control':19B 'infrastructur':22B 'insuffici':31B,61C 'let':6A 'may':53B 'obtain':38B,68C 'offlin':51B,80C 'password':4A,33B,40B,50B,63C,70C,82C 'password-guess':81C 'perform':78C 'polici':5A,34B,64C 'potenti':86C 'recov':54B,87C 'self':24B 'self-host':23B 'strong':32B,62C 'use':59C 'user':55B,88C 'weak':3A","nicknames":[],"mitigations":[],"who_affected":"Operators of Eaton easyE4 devices. The sources do not say which firmware versions are affected or which password settings are configurable. unknown","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T12:17:07+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"CybersecurityCOE@eaton.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-41021","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41021","severity":null,"published_at":"2026-10-27T12:17:07+00:00","modified_at":"2026-10-27T12:17:07+00:00","first_seen_at":"2026-10-27T12:31:38+00:00","fetched_at":"2026-10-27T12:31:38+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}