Vulnerability record · CVE-2026-63248 · published 4 August 2026

CVE-2026-63248: Eclipse milo missing authorization vulnerability

Eclipse · Milo

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.

6.9 CVSS 4.0 Medium EPSS 0.26% · top 84.1% CWE-862 · Missing authorization

6.9CVSS 4.0 base score

0.26%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

5 Aug 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Milo Eclipse

References

Link	Tags
https://github.com/eclipse-milo/milo/commit/a5dae1be0657d2b4fcb66e63f377c1dc36069e2a	Patch
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/181	Issue TrackingPatchVendor Advisory
https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598	Issue TrackingVendor Advisory

Track CVE-2026-63248 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-60007Eclipse milo vulnerabilityIn Eclipse Milo versions 0.6.0 through 1.1.4, username-token processing returns distinguishable errors for invalid RSA PKCS#1 v1.5 padding and other …EPSS 0.55%4 Aug 2026 8.8CVE-2026-58080Eclipse milo missing authorization vulnerabilityIn Eclipse Milo versions 1.0.0 through 1.1.4, `OpcUaServerConfig.copy()` fails to preserve a configured `RoleMapper`. On servers that rely on role pe…EPSS 0.38%4 Aug 2026 8.7CVE-2026-62927Eclipse milo incorrect authorization vulnerabilityIn Eclipse Milo versions 1.0.0 through 1.1.4, the Call service dispatches the original mixed batch to address-space handlers after calculating author…EPSS 0.42%4 Aug 2026 8.7CVE-2026-63252Eclipse milo memory leak vulnerabilityIn Eclipse Milo versions 0.6.0 through 1.1.4, UASC server transport handlers fail to release retained partial message chunks when a channel disconnec…EPSS 0.58%4 Aug 2026 7.5CVE-2022-25897Eclipse milo allocation without limits vulnerabilityThe package org.eclipse.milo:sdk-server before 0.6.8 are vulnerable to Denial of Service (DoS) when bypassing the limitations for excessive memory co…EPSS 1.3%8 Sep 2022 6.9CVE-2026-61387Eclipse milo uncontrolled resource consumption vulnerabilityIn Eclipse Milo versions 1.0.0 through 1.1.4, monitored-item quota accounting is not exception-safe: if item creation fails with an unchecked error, …EPSS 0.62%4 Aug 2026 9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed8 Sep 2026 7.8CVE-2022-0492Linux kernel cgroups v1 release_agent privilege escalation and container escapeThe Linux kernel's cgroup_release_agent_write in kernel/cgroup/cgroup-v1.c mishandles authorization, letting the cgroups v1 release_agent feature be …KEVEPSS 5.5%analysed3 Mar 2022

Source: NIST National Vulnerability Database (record CVE-2026-63248), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.