---
id: "CVE-2026-101600"
kind: "vulnerability"
aliases: ["CVE-2026-101600"]
title: "Oracle TimesTen In-Memory Database: local low-privilege user can read and change some data"
severity: "low"
cvss: 3.6
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["database", "oracle", "self-hosted", "timesten", "vendor"]
not_affected_if: ["no-untrusted-local-logon", "unaffected-version"]
published_at: "2026-10-20T22:18:13+00:00"
first_seen_at: "2026-10-23T21:57:22+00:00"
updated_at: "2026-10-25T04:45:31+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101600", "first_seen_at": "2026-10-23T21:57:22+00:00"}]
---

# Oracle TimesTen In-Memory Database: local low-privilege user can read and change some data

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).

_Summary, check and fix written by a model from the sources; labelled as such._

## 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)
- 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)
- Restrict OS logon on TimesTen hosts to required users until patched

## Timeline

- 2026-10-23T21:57:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101600

## From the sources

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).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_