{"id":"CVE-2026-101600","kind":"vulnerability","aliases":["CVE-2026-101600"],"related":[],"title":"Oracle TimesTen In-Memory Database: local low-privilege user can read and change some data","description":"Vulnerability in Oracle TimesTen In-Memory Database (component: TimesTen IMDB).  Supported versions that are affected are 26.1-26.1.1.3.0. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle TimesTen In-Memory Database executes to compromise Oracle TimesTen In-Memory Database.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle TimesTen In-Memory Database accessible data as well as  unauthorized read access to a subset of Oracle TimesTen In-Memory Database accessible data. CVSS 3.1 Base Score 3.6 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).","summary":"Oracle TimesTen In-Memory Database has a flaw in its TimesTen IMDB component that lets a low-privileged user already logged on to the host read a subset of accessible data and modify some of it. The attack is hard to carry out and the CVSS score is 3.6 (low).","severity":"low","cvss":3.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database","oracle","self-hosted","timesten","vendor"],"not_affected_if":["no-untrusted-local-logon","unaffected-version"],"how_to_check":"- Check the installed TimesTen version against the affected range 26.1 through 26.1.1.3.0, for example with `ttVersion` run from the TimesTen installation bin directory (unknown if the sources do not say this command)\n- Identify who has OS logon on hosts running TimesTen IMDB","fix":"- Move TimesTen In-Memory Database past `26.1.1.3.0` to a patched release listed in Oracle's security advisory (unknown patched version in the sources)\n- Restrict OS logon on TimesTen hosts to required users until patched","status":"open","published_at":"2026-10-20T22:18:13+00:00","first_seen_at":"2026-10-23T21:57:22+00:00","triaged_at":"2026-10-25T04:45:31+00:00","updated_at":"2026-10-25T04:45:31+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T04:45:31Z","model":"claude-haiku-5-5","output":{"fix":"- Move TimesTen In-Memory Database past `26.1.1.3.0` to a patched release listed in Oracle's security advisory (unknown patched version in the sources)\n- Restrict OS logon on TimesTen hosts to required users until patched","reach":"local","title":"Oracle TimesTen In-Memory Database: local low-privilege user can read and change some data","impact":"medium","summary":"Oracle TimesTen In-Memory Database has a flaw in its TimesTen IMDB component that lets a low-privileged user already logged on to the host read a subset of accessible data and modify some of it. The attack is hard to carry out and the CVSS score is 3.6 (low).","category":"vendor","nicknames":[],"who_cares":["oracle","timesten","database","self-hosted"],"confidence":0.6,"needs_auth":"yes","worst_case":"Local user reads and alters some database records","analyst_note":"Confirm the patched TimesTen release and the advisory URL from Oracle's Critical Patch Update for this CVE.","how_to_check":"- Check the installed TimesTen version against the affected range 26.1 through 26.1.1.3.0, for example with `ttVersion` run from the TimesTen installation bin directory (unknown if the sources do not say this command)\n- Identify who has OS logon on hosts running TimesTen IMDB","needs_analyst":true,"not_affected_if":["unaffected-version","no-untrusted-local-logon"],"who_is_affected":"Systems running Oracle TimesTen In-Memory Database in the affected version range 26.1 through 26.1.1.3.0. The attacker must already have a logon to the infrastructure where TimesTen runs, so hosts without untrusted local users are at lower risk; teams on other database versions can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000676,"input_tokens":3529,"output_tokens":646,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-101600':20A,23A '-2026':19A,22A '/av':187C '26.1':100C '26.1.1.3.0':101C '3.1':175C,186C '3.6':81B,178C 'access':62B,144C,154C,161C,172C 'affect':98C 'allow':106C 'alreadi':52B 'attack':70B,109C,132C 'base':176C 'carri':74B 'chang':15A 'compon':44B,91C 'compromis':124C 'confidenti':179C 'cve':18A,21A 'cvss':78B,174C,183C,185C 'data':17A,63B,155C,173C 'databas':6A,24B,36B,90C,121C,130C,153C,171C 'delet':143C 'difficult':102C 'execut':122C 'exploit':104C 'flaw':39B 'h/pr':189C 'hard':72B 'host':28B,57B 'imdb':43B,93C 'impact':182C 'in-memori':3A,33B,87C,118C,127C,150C,168C 'infrastructur':114C 'insert':141C 'integr':181C 'l/a':194C 'l/ac':188C 'l/i':193C 'l/ui':190C 'let':46B 'local':7A 'log':53B 'logon':111C 'low':9A,49B,82B,107C 'low-privileg':8A,48B 'memori':5A,35B,89C,120C,129C,152C,170C 'modifi':65B 'n':195C 'n/s':191C 'oracl':1A,25B,31B,85C,116C,125C,148C,166C 'privileg':10A,50B,108C 'read':13A,58B,160C 'result':137C 'score':79B,177C 'self':27B 'self-host':26B 'subset':60B,164C 'success':131C 'support':94C 'timesten':2A,29B,32B,42B,86C,92C,117C,126C,149C,167C 'u/c':192C 'unauthor':139C,159C 'updat':140C 'user':11A,51B 'vector':184C 'vendor':30B 'version':95C 'vulner':83C,105C,135C 'well':157C","nicknames":[],"mitigations":[],"who_affected":"Systems running Oracle TimesTen In-Memory Database in the affected version range 26.1 through 26.1.1.3.0. The attacker must already have a logon to the infrastructure where TimesTen runs, so hosts without untrusted local users are at lower risk; teams on other database versions can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:13+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-101600","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101600","severity":null,"published_at":"2026-10-20T22:18:13+00:00","modified_at":"2026-10-21T18:43:53+00:00","first_seen_at":"2026-10-23T21:57:22+00:00","fetched_at":"2026-10-23T22:28:58+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"}