Eclipse Milo up to 1.1.4 OPC UA Server Diagnostics Nodes improper authorization

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k3.24+

Summaryinfo

A vulnerability labeled as problematic has been found in Eclipse Milo up to 1.1.4. Impacted is an unknown function of the component OPC UA Server Diagnostics Nodes. Such manipulation leads to improper authorization. This vulnerability is listed as CVE-2026-63248. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Eclipse Milo up to 1.1.4 and classified as problematic. Affected by this issue is an unknown part of the component OPC UA Server Diagnostics Nodes. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-63248 since 07/16/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Applying the patch a5dae1be0657d2b4fcb66e63f377c1dc36069e2a is able to eliminate this problem.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: a5dae1be0657d2b4fcb66e63f377c1dc36069e2a

Timelineinfo

07/16/2026 CVE reserved
08/04/2026 +19 days Advisory disclosed
08/04/2026 +0 days VulDB entry created
08/04/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-63248 (🔒)
GCVE (CVE): GCVE-0-2026-63248
GCVE (VulDB): GCVE-100-385808

Entryinfo

Created: 08/04/2026 14:51
Changes: 08/04/2026 14:51 (55)
Complete: 🔍
Cache ID: 216::103

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