{"id":"CVE-2026-91617","kind":"vulnerability","aliases":["CVE-2026-91617"],"related":[],"title":"Oracle Middleware Remote Diagnostic Agent: low-privilege local user reads critical data","description":"Vulnerability in the Oracle Middleware Common Libraries and Tools product of Oracle Fusion Middleware (component: Remote Diagnostic Agent).  Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and  15.1.1.0.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Middleware Common Libraries and Tools executes to compromise Oracle Middleware Common Libraries and Tools.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Middleware Common Libraries and Tools accessible data. CVSS 3.1 Base Score 5.5 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).","summary":"Oracle Middleware Common Libraries and Tools, in the Remote Diagnostic Agent component, has a flaw that lets a low-privileged user who can log on to the host reach data they should not see. The CVSS 3.1 score is 5.5 with high confidentiality impact only, and the attack is local and needs low privileges.","severity":"medium","cvss":5.5,"epss":0.00151,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["java","oracle-fusion-middleware","self-hosted","vendor"],"not_affected_if":["no-local-logon","other-versions"],"how_to_check":"- Check the installed Oracle Middleware Common Libraries and Tools version against the affected list: `12.2.1.4.0`, `14.1.1.0.0`, `14.1.2.0.0`, `15.1.1.0.0`\n- Confirm whether the Remote Diagnostic Agent component is installed on the host","fix":"- unknown (the sources do not name a patched version or Oracle Critical Patch Update; check Oracle's Security Alerts advisory for the patch)","status":"open","published_at":"2026-10-20T22:21:02+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T04:12:00+00:00","updated_at":"2026-10-25T04:12:00+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T04:12:00Z","model":"claude-haiku-5-5","output":{"fix":"- unknown (the sources do not name a patched version or Oracle Critical Patch Update; check Oracle's Security Alerts advisory for the patch)","reach":"local","title":"Oracle Middleware Remote Diagnostic Agent: low-privilege local user reads critical data","impact":"medium","summary":"Oracle Middleware Common Libraries and Tools, in the Remote Diagnostic Agent component, has a flaw that lets a low-privileged user who can log on to the host reach data they should not see. The CVSS 3.1 score is 5.5 with high confidentiality impact only, and the attack is local and needs low privileges.","category":"vendor","nicknames":[],"who_cares":["oracle-fusion-middleware","self-hosted","java"],"confidence":0.6,"needs_auth":"yes","worst_case":"local low-privilege user reads sensitive middleware data","analyst_note":"Find the Oracle patch version and whether Remote Diagnostic Agent is enabled by default, via the Oracle Security Alerts page for this CVE.","how_to_check":"- Check the installed Oracle Middleware Common Libraries and Tools version against the affected list: `12.2.1.4.0`, `14.1.1.0.0`, `14.1.2.0.0`, `15.1.1.0.0`\n- Confirm whether the Remote Diagnostic Agent component is installed on the host","needs_analyst":true,"not_affected_if":["other-versions","no-local-logon"],"who_is_affected":"Hosts running Oracle Fusion Middleware with Oracle Middleware Common Libraries and Tools in the listed versions, where the Remote Diagnostic Agent component is present. Exposure requires a local account on that infrastructure, so systems with no untrusted or shared logons are at lower risk. The sources do not say whether the component is enabled by default.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000695,"input_tokens":3592,"output_tokens":672,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-91617':16A,19A '/av':178C '12.2.1.4.0':108C '14.1.1.0.0':109C '14.1.2.0.0':110C '15.1.1.0.0':112C '3.1':66B,168C,177C '5.5':69B,171C 'access':150C,156C,165C 'affect':106C 'agent':5A,39B,101C 'allow':116C 'attack':77B,119C,142C 'base':169C 'common':31B,89C,128C,137C,161C 'complet':155C 'compon':40B,98C 'compromis':134C 'confidenti':72B,172C 'critic':12A,152C 'cve':14A,17A 'cvss':65B,167C,174C,176C 'data':13A,59B,153C,166C 'diagnost':4A,38B,100C 'easili':113C 'execut':132C 'exploit':114C 'flaw':43B 'fusion':23B,96C 'h/i':184C 'high':71B 'host':27B,57B 'impact':73B,173C 'infrastructur':124C 'java':20B 'l/ac':179C 'l/pr':180C 'l/ui':181C 'let':45B 'librari':32B,90C,129C,138C,162C 'local':9A,79B 'log':53B 'logon':121C 'low':7A,48B,82B,117C 'low-privileg':6A,47B 'middlewar':2A,24B,30B,88C,97C,127C,136C,160C 'n':186C 'n/a':185C 'n/s':182C 'need':81B 'oracl':1A,22B,29B,87C,95C,126C,135C,159C 'oracle-fusion-middlewar':21B 'privileg':8A,49B,83B,118C 'product':93C 'reach':58B 'read':11A 'remot':3A,37B,99C 'result':147C 'score':67B,170C 'see':63B 'self':26B 'self-host':25B 'success':141C 'support':102C 'tool':34B,92C,131C,140C,164C 'u/c':183C 'unauthor':149C 'user':10A,50B 'vector':175C 'vendor':28B 'version':103C 'vulner':84C,115C,145C","nicknames":[],"mitigations":[],"who_affected":"Hosts running Oracle Fusion Middleware with Oracle Middleware Common Libraries and Tools in the listed versions, where the Remote Diagnostic Agent component is present. Exposure requires a local account on that infrastructure, so systems with no untrusted or shared logons are at lower risk. The sources do not say whether the component is enabled by default.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:21:02+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91617","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91617","severity":null,"published_at":"2026-10-20T22:21:02+00:00","modified_at":"2026-10-21T18:44:55+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","fetched_at":"2026-10-23T22:29:01+00:00","note":null},{"source":"epss","external_id":"CVE-2026-91617","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91617","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T13:15:55+00:00","fetched_at":"2026-10-24T13:15:55+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"}