CVE-2026-63248

EUVD-2026-52664

04.08.2026, 13:18

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
eclipse	CNA	6.9 MEDIUM	NETWORK	LOW	NONE	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
eclipse	milo	0.6.0 ≤ 𝑥 ≤ 1.1.4	CNA

Common Weakness Enumeration

CWE-862 - Missing Authorization
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

References

https://github.com/eclipse-milo/milo/commit/a5dae1be0657d2b4fcb66e63f377c1dc36069e2a

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/181

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598