# CVE-2026-63248: In Eclipse Milo versions 0.6.0 through 1.1.4, OPC UA server diagnostics nodes do not enforce access authorization. An…

Source: https://junglewise.ai/threats/cve-2026-63248-in-eclipse-milo-versions-0-6-0-through-1-1-4-opc-ua-server  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-04  
License: CC BY 4.0 with a link back

CVE-2026-63248 · Severity: medium · CVSS 6.5 · Published 2026-08-04

In Eclipse Milo versions 0.6.0 through 1.1.4, OPC UA server diagnostics nodes do not enforce access authorization. An anonymous client can enable diagnostics over a None/None endpoint without a certificate; with a trusted client application certificate over SignAndEncrypt, it can read security diagnostics for other active sessions, exposing usernames, login history, authentication mechanisms, security modes and policies, and public client certificates.

Technologies: [Eclipse Milo](https://junglewise.ai/threats/technologies/milo). Vendors: [Eclipse](https://junglewise.ai/threats/vendors/eclipse).

## Quick answers

**Is CVE-2026-63248 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-63248 being exploited in the wild.

**How severe is CVE-2026-63248?** Medium severity, with a CVSS score of 6.5, published 4 August 2026.

**Which products and versions are affected?** Eclipse Milo. The advisory does not name versions.

**Is there a fix for CVE-2026-63248?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-63248?** Check whether you run Eclipse Milo. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Eclipse Milo

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