Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-56451 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

A vulnerability has been identified in Opcenter X (All versions < V2604). Affected applications do not properly validate the algorithm specified in the JSON Web Token (JWT) header. This could allow an unauthenticated remote attacker to forge arbitrary JWT, bypass authentication mechanisms and impersonate any user including administrative accounts, potentially gaining full unauthorized access to the application.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CNA: [email protected]CVSS-B:10 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://cert-portal.siemens.com/productcert/html/ssa-096828.html	[email protected]	AdvisoryRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-347	Improper Verification of Cryptographic Signature	[email protected]

Affected Products

Product	Versions
Siemens Opcenter X	< V2604
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: V2604moderate efforthttps://support.sw.siemens.com/product/206159703/

Change History

2 change records found show changes

Date	Action	Recorded By
Jul 14, 2026	CVE Modified	CISA-ADP
Jul 14, 2026	New CVE Received	[email protected]