[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"branding":3,"analytics":7,"article-johnson-controls-patches-critical-bug-in-physical-security-software":10,"sections":41},{"siteName":4,"siteTagline":5,"publisherName":4,"contactEmail":6},"The Revision","Tech news, decoded.","editor@therevision.news",{"gaMeasurementId":8,"adsenseClientId":9},"G-ZW2MV82GYR","ca-pub-8533917693782264",{"article":11},{"id":12,"slug":13,"title":14,"dek":15,"body_md":16,"tags_json":17,"published_at":18,"created_at":19,"updated_at":20,"status":21,"review_note":22,"review_notes":23,"image_url":22,"persona_id":22,"persona_name":22,"section":30,"tags":31,"sources":36,"feedback":40,"feedback_at":22,"cost_usd":40,"total_tokens":40},4891,"johnson-controls-patches-critical-bug-in-physical-security-software","Johnson Controls Patches Critical Bug in Physical Security Software","A critical 9.6-rated flaw in Johnson Controls physical-access-control software lets an unauthenticated attacker on the network execute code and unlock doors.","Johnson Controls just shipped a critical fix for software that controls who gets through the door at factories and other secured facilities.\n\nAn advisory update published August 11, 2026 details three vulnerabilities in Johnson Controls' C-CURE 9000 and victor physical-access-control platforms. The worst, CVE-2026-21655, scores 9.6 out of 10 and stems from an unsafe deserialization path: an attacker on the same network segment, without a password, can run arbitrary code on the application server and even reach connected client workstations. Two related bugs, a server-side request forgery flaw in victor Web (CVE-2026-21653) and a broken access control issue (CVE-2026-34496), let attackers pull data from internal systems or let low-privilege users browse user lists and audit logs they shouldn't see. Johnson Controls is telling customers to upgrade: C-CURE 9000 to v3.20, victor Application Server to v4.20, and victor to v8.0.\n\nThis isn't a leaky database. It's software that unlocks doors, and Johnson Controls markets these platforms to critical manufacturing sites worldwide. An attacker who lands on the local network, through a compromised badge reader, a misconfigured VPN, or a phished contractor, could remotely take over the server that decides who is allowed into a building. For a facility that stores hazardous materials or runs sensitive production lines, that turns an IT problem into a physical safety problem.\n\nUntil the patch lands, the mitigation advice is blunt: block port 8999 from anyone who doesn't need it, and watch for the deserialization exploit tools attackers already have off the shelf.","[\"physical-security\",\"ics-vulnerability\",\"critical-infrastructure\",\"cisa\"]","2026-08-11T12:00:00.000Z","2026-08-14T05:52:31.320Z","2026-08-14T05:52:43.134Z","published",null,[24],{"id":25,"reviewer":26,"round":27,"reason":28,"status":29},"editor-r1","editor",1,"Fix the dek: it calls this a 'near-critical' bug, but the headline and CISA both rate CVE-2026-21655 as CRITICAL (9.6 CVSS) — align the dek's severity language with the headline and body.","resolved","security",[32,33,34,35],"physical-security","ics-vulnerability","critical-infrastructure","cisa",[37],{"name":38,"url":39},"CISA Advisories","https:\u002F\u002Fwww.cisa.gov\u002Fnews-events\u002Fics-advisories\u002Ficsa-26-204-01",0,{"sections":42},[43,48,51,56,61,66,71,76,81,86,91,96,101,106],{"name":44,"slug":45,"count":46,"latest_published_at":47},"AI","ai",3293,"2026-08-20T04:00:00.000Z",{"name":49,"slug":30,"count":50,"latest_published_at":47},"Security",435,{"name":52,"slug":53,"count":54,"latest_published_at":55},"Policy","policy",210,"2026-08-19T09:32:27.000Z",{"name":57,"slug":58,"count":59,"latest_published_at":60},"Deals","deals",179,"2026-06-29T20:02:07.000Z",{"name":62,"slug":63,"count":64,"latest_published_at":65},"Hardware","hardware",140,"2026-08-19T18:25:42.000Z",{"name":67,"slug":68,"count":69,"latest_published_at":70},"Consumer Tech","consumer-tech",95,"2026-08-18T16:05:00.000Z",{"name":72,"slug":73,"count":74,"latest_published_at":75},"Science","science",90,"2026-08-19T18:41:02.000Z",{"name":77,"slug":78,"count":79,"latest_published_at":80},"Software","software",73,"2026-08-18T07:51:50.000Z",{"name":82,"slug":83,"count":84,"latest_published_at":85},"Dev Tools","dev-tools",69,"2026-08-18T04:00:00.000Z",{"name":87,"slug":88,"count":89,"latest_published_at":90},"Startups","startups",47,"2026-08-19T19:13:46.000Z",{"name":92,"slug":93,"count":94,"latest_published_at":95},"Gaming","gaming",41,"2026-07-09T04:00:00.000Z",{"name":97,"slug":98,"count":99,"latest_published_at":100},"General","general",33,"2026-08-18T22:18:13.000Z",{"name":102,"slug":103,"count":104,"latest_published_at":105},"Reviews","reviews",20,"2026-06-24T12:00:01.000Z",{"name":107,"slug":108,"count":109,"latest_published_at":110},"How-To","how-to",6,"2026-06-16T09:00:00.000Z"]