What and how critical
A unique identifier, severity rating per CVSS v3.1 with vector string, and affected product versions. Precise and with no room for interpretation, so you can carry out your risk assessment cleanly.
Here we publish security reports for our products — structured, dated, and with all the information you need for your own risk assessment.
Every advisory follows a consistent structure so that you can grasp the information relevant to you at a glance.
A unique identifier, severity rating per CVSS v3.1 with vector string, and affected product versions. Precise and with no room for interpretation, so you can carry out your risk assessment cleanly.
Workaround if available, version reference for the fix, and clear instructions for action. You can see at a glance whether immediate intervention is required or whether you can wait for the next regular release.
CVE number if assigned, external bulletins from the OPC Foundation or comparable bodies, plus acknowledgment of the reporter on request. So that your supply chain documentation remains complete.
Search by identifier, product, or keyword. Filters by severity and status refine the list. Each entry has a unique URL that you can share directly.
Opc.UaFx.Advanced 2.51.0 up to and including 2.52.3Opc.UaFx.Advanced 2.50.x — all versionsOpcCertificateCheck.AllowedHashAlgorithms exclusively to SHA256 or higher, and additionally enable OpcCertificateCheck.RequireFullChainValidation = true. This configuration enforces strict path validation and mitigates the vulnerability.Opc.UaFx.Advanced 2.52.4. Recommendation: promptly update to the current 2.52.x or the newer 2.53.x series.Codabix 2.4.0 up to and including 2.4.7codabix.mqtt.maxClientLifetime in the configuration to a fixed value (recommended: 1800 seconds). This fully closes the gap until the fix is available.Codabix 2.4.8. Expected release date: early December 2026. Customers with Tier 2 or Tier 3 service receive separate advance notice.Opc.UaFx all 2.4x versions before 2.49.0Opc.UaFx 2.49.0 — sensitive fields are redacted before log output.Please send security reports directly to our PSIRT channel — not to general support. This way we ensure that the report reaches the right people immediately.
Our Coordinated Vulnerability Disclosure Policy describes the reporting path, our response times, and the coordinated disclosure agreement. For a report submitted under this policy, we refrain from taking legal action against you as the reporter. We do not make bug bounty payments; on request, we name you as the reporter in the published advisory.
"An advisory is more than an entry — it should support your assessment and your action. If anything remains unclear, talk to us."