{"id":"CVE-2026-91539","kind":"vulnerability","aliases":["CVE-2026-91539"],"related":[],"title":"Oracle Business Intelligence: Presentation Services flaw lets local users take over","description":"Vulnerability in the Oracle Business Intelligence Enterprise Edition product of Oracle Analytics (component: Presentation Services).   The supported version that is affected is 12.2.1.4.0. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Business Intelligence Enterprise Edition executes to compromise Oracle Business Intelligence Enterprise Edition.  Successful attacks of this vulnerability can result in takeover of Oracle Business Intelligence Enterprise Edition. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).","summary":"Oracle Business Intelligence Enterprise Edition 12.2.1.4.0 has a flaw in its Presentation Services component. A low-privileged user with logon to the host running it can take over the product, with full confidentiality, integrity and availability impact.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["oracle-analytics","oracle-bi","self-hosted","vendor"],"not_affected_if":[],"how_to_check":"- Confirm the deployed version of Oracle Business Intelligence Enterprise Edition is `12.2.1.4.0` (unknown how to read it from the sources)\n- Check whether Presentation Services is in use on the host (unknown from the sources)","fix":"- Apply the Oracle Critical Patch Update fix for Oracle Business Intelligence Enterprise Edition 12.2.1.4.0 (unknown from the sources; the patch identifier is not given)","status":"open","published_at":"2026-10-20T22:20:57+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T03:08:31+00:00","updated_at":"2026-10-25T03:08:31+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T03:08:31Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Oracle Business Intelligence Enterprise Edition 12.2.1.4.0 (unknown from the sources; the patch identifier is not given)","reach":"local","title":"Oracle Business Intelligence: Presentation Services flaw lets local users take over","impact":"high","summary":"Oracle Business Intelligence Enterprise Edition 12.2.1.4.0 has a flaw in its Presentation Services component. A low-privileged user with logon to the host running it can take over the product, with full confidentiality, integrity and availability impact.","category":"vendor","nicknames":[],"who_cares":["oracle-analytics","oracle-bi","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker with local logon takes over the BI server","analyst_note":"Find the Oracle Critical Patch Update advisory and patch number for BI EE 12.2.1.4.0, and confirm the affected deployment configurations.","how_to_check":"- Confirm the deployed version of Oracle Business Intelligence Enterprise Edition is `12.2.1.4.0` (unknown how to read it from the sources)\n- Check whether Presentation Services is in use on the host (unknown from the sources)","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organizations running Oracle Business Intelligence Enterprise Edition 12.2.1.4.0 where users have logon access to the infrastructure the product executes on. The sources do not say which deployment modes or configurations are exposed, so the exact population is unknown.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000646,"input_tokens":3499,"output_tokens":593,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-91539':13A,16A '/av':143C '12.2.1.4.0':32B,87C '3.1':130C,142C '7.8':133C 'affect':85C 'allow':91C 'analyt':19B,76C 'attack':94C,115C 'avail':63B,137C 'base':131C 'bi':22B 'busi':2A,28B,69C,102C,110C,125C 'compon':40B,77C 'compromis':108C 'confidenti':60B,134C 'cve':11A,14A 'cvss':129C,139C,141C 'easili':88C 'edit':31B,72C,105C,113C,128C 'enterpris':30B,71C,104C,112C,127C 'execut':106C 'exploit':89C 'flaw':6A,35B 'full':59B 'h':151C 'h/a':150C 'h/i':149C 'host':25B,50B 'impact':64B,138C 'infrastructur':99C 'integr':61B,135C 'intellig':3A,29B,70C,103C,111C,126C 'l/ac':144C 'l/pr':145C 'l/ui':146C 'let':7A 'local':8A 'logon':47B,96C 'low':43B,92C 'low-privileg':42B 'n/s':147C 'oracl':1A,18B,21B,27B,68C,75C,101C,109C,124C 'oracle-analyt':17B 'oracle-bi':20B 'present':4A,38B,78C 'privileg':44B,93C 'product':57B,73C 'result':120C 'run':51B 'score':132C 'self':24B 'self-host':23B 'servic':5A,39B,79C 'success':114C 'support':81C 'take':10A,54B 'takeov':122C 'u/c':148C 'user':9A,45B 'vector':140C 'vendor':26B 'version':82C 'vulner':65C,90C,118C","nicknames":[],"mitigations":[],"who_affected":"Organizations running Oracle Business Intelligence Enterprise Edition 12.2.1.4.0 where users have logon access to the infrastructure the product executes on. The sources do not say which deployment modes or configurations are exposed, so the exact population is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:57+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91539","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91539","severity":null,"published_at":"2026-10-20T22:20:57+00:00","modified_at":"2026-10-21T18:44:55+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","fetched_at":"2026-10-23T22:29:00+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"}