{"id":"CVE-2026-76936","kind":"vulnerability","aliases":["CVE-2026-76936"],"related":[],"title":"JP1 Automatic Job Management System 3: stack buffer overflow in Manager","description":"Stack-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3.\n\n\nThis issue affects JP1/Automatic Job Management System 3 - Manager: from 10-00 before 13-50-31.","summary":"JP1/Automatic Job Management System 3 Manager has a stack-based buffer overflow in versions 10-00 through before 13-50-31. The sources do not say what input triggers it, but a stack overflow of this kind can let an attacker run code on the job management server.","severity":"critical","cvss":9.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["hitachi","infrastructure","job-scheduling","jp1","linux","windows"],"not_affected_if":[],"how_to_check":"- Check the installed JP1/AJS3 Manager version in the Hitachi product's version information or install directory; unknown whether a command reports it.\n- Confirm whether the Manager is in the 10-00 to 13-50-31 range.","fix":"- Upgrade JP1/Automatic Job Management System 3 Manager to `13-50-31` or later, per the vendor advisory (unknown whether the sources link it).","status":"open","published_at":"2026-10-27T10:16:55+00:00","first_seen_at":"2026-10-27T10:31:02+00:00","triaged_at":"2026-10-27T10:31:47+00:00","updated_at":"2026-10-27T10:31:47+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-10-27T10:31:47Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade JP1/Automatic Job Management System 3 Manager to `13-50-31` or later, per the vendor advisory (unknown whether the sources link it).","reach":"unknown","title":"JP1 Automatic Job Management System 3: stack buffer overflow in Manager","impact":"high","summary":"JP1/Automatic Job Management System 3 Manager has a stack-based buffer overflow in versions 10-00 through before 13-50-31. The sources do not say what input triggers it, but a stack overflow of this kind can let an attacker run code on the job management server.","category":"infrastructure","nicknames":[],"who_cares":["jp1","hitachi","job-scheduling","windows","linux"],"confidence":0.4,"needs_auth":"unknown","worst_case":"Attacker may run code on the job management server","analyst_note":"Find the Hitachi advisory for JP1/AJS3 to confirm the trigger, network reach, authentication need and the fixed version.","how_to_check":"- Check the installed JP1/AJS3 Manager version in the Hitachi product's version information or install directory; unknown whether a command reports it.\n- Confirm whether the Manager is in the 10-00 to 13-50-31 range.","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Teams running the JP1/Automatic Job Management System 3 Manager from 10-00 up to but not including 13-50-31. The sources do not say which configurations or network exposure make it reachable, so unknown whether a team can skip it.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000613,"input_tokens":3292,"output_tokens":568,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-00':42B,98C '-2026':13A,16A '-31':47B,102C '-50':46B,101C '-76936':14A,17A '10':41B,97C '13':45B,100C '3':6A,30B,86C,94C 'affect':89C 'attack':67B 'automat':2A 'base':36B,77C 'buffer':8A,37B,78C 'code':69B 'cve':12A,15A 'hitachi':18B 'infrastructur':19B 'input':54B 'issu':88C 'job':3A,21B,27B,72B,83C,91C 'job-schedul':20B 'jp1':1A,23B 'jp1/automatic':26B,82C,90C 'kind':63B 'let':65B 'linux':24B 'manag':4A,11A,28B,31B,73B,84C,92C,95C 'overflow':9A,38B,60B,79C 'run':68B 'say':52B 'schedul':22B 'server':74B 'sourc':49B 'stack':7A,35B,59B,76C 'stack-bas':34B,75C 'system':5A,29B,85C,93C 'trigger':55B 'version':40B 'vulner':80C 'window':25B","nicknames":[],"mitigations":[],"who_affected":"Teams running the JP1/Automatic Job Management System 3 Manager from 10-00 up to but not including 13-50-31. The sources do not say which configurations or network exposure make it reachable, so unknown whether a team can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T10:16:55+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","cvss_by":"hirt@hitachi.co.jp","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76936","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76936","severity":null,"published_at":"2026-10-27T10:16:55+00:00","modified_at":"2026-10-27T10:16:55+00:00","first_seen_at":"2026-10-27T10:31:02+00:00","fetched_at":"2026-10-27T10:31:02+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"}