---
id: "CVE-2026-91617"
kind: "vulnerability"
aliases: ["CVE-2026-91617"]
title: "Oracle Middleware Remote Diagnostic Agent: low-privilege local user reads critical data"
severity: "medium"
cvss: 5.5
epss: 0.00151
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["java", "oracle-fusion-middleware", "self-hosted", "vendor"]
not_affected_if: ["no-local-logon", "other-versions"]
published_at: "2026-10-20T22:21:02+00:00"
first_seen_at: "2026-10-23T21:57:27+00:00"
updated_at: "2026-10-25T04:12:00+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91617", "first_seen_at": "2026-10-23T21:57:27+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91617", "first_seen_at": "2026-10-24T13:15:55+00:00"}]
---

# Oracle Middleware Remote Diagnostic Agent: low-privilege local user reads critical data

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.

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

## 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`
- 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)

## Timeline

- 2026-10-23T21:57:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91617
- 2026-10-24T13:15:55+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91617

## From the sources

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).

---

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