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") ![](/images/getstarted-writetous-navbar-int_ZY7MOf.webp) ### Write to us Fill out our request form. Our experts will respond as soon as possible. [Write to us](/en/request-information "Write to us") Cybersecurity at NFON # Security Vulnerability Register Our online register for vulnerabilities provides you with a detailed assessment of security flaws in our applications, which we evaluate according to the industry standard **[CVSS](https://en.wikipedia.org/wiki/Common_Vulnerability_Scoring_System)**. [Contact us](mailto:it-security@nfon.com "Contact us") ### Security & transparency We are continuously working to make our applications more secure and eliminate vulnerabilities to ensure the safety of our customers. If you have any questions or suggestions, please do not hesitate to contact us. We are always available to assist you. [Contact us](mailto:it-security@nfon.com "Contact us") [Responsible Disclosure Policy](/en/security/responsible-disclosure-policy "Responsible Disclosure Policy") 1 If you are affected by a vulnerability, you will find guidance and instructions on how to respond to protect your systems and data. 2 We strongly recommend following these instructions. If you discover a vulnerability yourself, we kindly ask you to read our **Responsible Disclosure Policy** and contact us immediately. ## Vulnerabilities | **Date** | **CVSS** | **Desc** | **CVSS (full)** | **Notes** | | --- | --- | --- | --- | --- | | | | | | | ![NFON Logo](/assets/logo-nfon.svg) News * [Events](https://www.nfon.com/en/news/events) * [Press](https://corporate.nfon.com/en/communication/) Customers * [Cloudya Login](https://start.cloudya.com/auth/login) * [Admin Portal](https://admin.nfon.com/) * [NFON Status](https://status.nfon.com/) About NFON * [Corporate](https://corporate.nfon.com/en/) * [Investor Relations](https://corporate.nfon.com/en/investor-relations/ir-at-a-glance/) * [Sustainability & ESG](https://corporate.nfon.com/en/sustainability/) * [Career](https://corporate.nfon.com/en/careers/) Legal * [GTC-SLA](/en/legal/gtc-sla) * [Legal Notice](/en/legal/legal-notice) * [Trust Center](https://www.nfon.com/en/trust-center/) * [Data Protection](/en/legal/data-protection) * [Cookie Settings](javascript:onclick=UC_UI.showSecondLayer()) © 2026 - NFON | All rights reserved.