{"id":"CVE-2026-76939","kind":"vulnerability","aliases":["CVE-2026-76939"],"related":[],"title":"JP1 Automatic Job Management System 3: heap overflow may allow code execution","description":"Heap-based Buffer Overflow Vulnerability in JP1/Automatic Job Management System 3.\n\nThis issue affects JP1/Automatic Job Management System 3 - Manager: from 11-00 before 13-50-31; JP1/Automatic Job Management System 3 - Agent: from 11-00 before 13-50-31.","summary":"JP1/Automatic Job Management System 3 Manager and Agent contain a heap-based buffer overflow in versions from 11-00 before 13-50-31. An attacker who can reach the service may be able to corrupt memory and run code, though the sources do not describe the exact trigger.","severity":"critical","cvss":9.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["automatic-job-management","enterprise-ops","job-scheduling","jp1","other"],"not_affected_if":["version-13-50-31-or-later"],"how_to_check":"- Check the installed JP1/Automatic Job Management System 3 Manager and Agent versions against `13-50-31`; the sources do not say how to read the version locally, so unknown for the exact command.","fix":"- Upgrade JP1/Automatic Job Management System 3 Manager and Agent to `13-50-31` or later, per the vendor advisory (the sources do not link it, so the exact fixed build is unknown).","status":"open","published_at":"2026-10-27T10:16:55+00:00","first_seen_at":"2026-10-27T10:31:02+00:00","triaged_at":"2026-10-27T10:31:38+00:00","updated_at":"2026-10-27T10:31:38+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-10-27T10:31:38Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade JP1/Automatic Job Management System 3 Manager and Agent to `13-50-31` or later, per the vendor advisory (the sources do not link it, so the exact fixed build is unknown).","reach":"unknown","title":"JP1 Automatic Job Management System 3: heap overflow may allow code execution","impact":"high","summary":"JP1/Automatic Job Management System 3 Manager and Agent contain a heap-based buffer overflow in versions from 11-00 before 13-50-31. An attacker who can reach the service may be able to corrupt memory and run code, though the sources do not describe the exact trigger.","category":"other","nicknames":[],"who_cares":["jp1","automatic-job-management","job-scheduling","enterprise-ops"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Attacker may corrupt memory and run code on the server","analyst_note":"Find the vendor advisory (Hitachi/JP1) and NVD details to confirm the trigger, network reach, authentication need and fixed build name.","how_to_check":"- Check the installed JP1/Automatic Job Management System 3 Manager and Agent versions against `13-50-31`; the sources do not say how to read the version locally, so unknown for the exact command.","needs_analyst":true,"not_affected_if":["version-13-50-31-or-later"],"who_is_affected":"Teams running JP1/Automatic Job Management System 3 Manager or Agent from 11-00 up to but not including 13-50-31. Systems on 13-50-31 or later are not affected. The sources do not say whether the network service is exposed by default.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000633,"input_tokens":3327,"output_tokens":601,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-00':49B,102C,115C '-2026':14A,17A '-31':53B,106C,119C '-50':52B,105C,118C '-76939':15A,18A '11':48B,101C,114C '13':51B,104C,117C '3':6A,34B,90C,98C,111C 'abl':63B 'affect':93C 'agent':37B,112C 'allow':10A 'attack':55B 'automat':2A,20B 'automatic-job-manag':19B 'base':42B,81C 'buffer':43B,82C 'code':11A,69B 'contain':38B 'corrupt':65B 'cve':13A,16A 'describ':75B 'enterpris':24B 'enterprise-op':23B 'exact':77B 'execut':12A 'heap':7A,41B,80C 'heap-bas':40B,79C 'issu':92C 'job':3A,21B,27B,31B,87C,95C,108C 'job-schedul':26B 'jp1':1A,29B 'jp1/automatic':30B,86C,94C,107C 'manag':4A,22B,32B,35B,88C,96C,99C,109C 'may':9A,61B 'memori':66B 'op':25B 'overflow':8A,44B,83C 'reach':58B 'run':68B 'schedul':28B 'servic':60B 'sourc':72B 'system':5A,33B,89C,97C,110C 'though':70B 'trigger':78B 'version':46B 'vulner':84C","nicknames":[],"mitigations":[],"who_affected":"Teams running JP1/Automatic Job Management System 3 Manager or Agent from 11-00 up to but not including 13-50-31. Systems on 13-50-31 or later are not affected. The sources do not say whether the network service is exposed by default.","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:H","cvss_by":"hirt@hitachi.co.jp","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76939","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76939","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"}