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…
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.
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.