CVE-2026-56451: Opcenter X 0 to before V2604

CVE-2026-56451. CVSS 3.1 base score 10.0 (CRITICAL, Vendor/CNA). EPSS 0.00498 (percentile 0.41761), scored 22-Oct-2026.

Affected technology

Opcenter X · 0 to before V2604
Siemens

Description’s affected range: versions < V2604)

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An unauthenticated remote attacker could forge arbitrary JWT, bypass authentication mechanisms and impersonate any user including administrative accounts, potentially gaining full unauthorized access to the application. Vendor/CNA’s CVSS 4.0 assessment (base score 10.0/10) rates confidentiality and integrity impact as high; availability impact as low.

Published 24-Oct-2026 01:43 UTC

CWE: CWE-347
CCR priority: 40.1 /100 (P3)
CVSS 3.1: 10.0 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · Vendor/CNA
EPSS: 0.00498 · percentile 0.41761 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56451.html