What’s Vulnerable › Vulnerabilities
CVE-2026-56451
- Severity: critical (CVSS 10.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-14 · updated 2026-10-23
- Weakness: CWE-347
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.
Affected products
- Siemens Opcenter X: before V2604 — fixed in V2604
How to fix
Upgrade to a fixed version: Siemens Opcenter X V2604. Check the vendor advisory for mitigations.
References
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