--- title: "CVE-2023-5222: Viessmann Vitogate 300 Web Management… | CubePath" description: "A vulnerability classified as critical was found in Viessmann Vitogate 300 up to 2.1.3.0. This vulnerability affects the function isValidUser of the file…" language: en source: https://cubepath.com/security/cve/CVE-2023-5222 --- # CVE-2023-5222: Viessmann Vitogate 300 Web Management… | CubePath ## Description A vulnerability classified as critical was found in Viessmann Vitogate 300 up to 2.1.3.0\. This vulnerability affects the function isValidUser of the file /cgi-bin/vitogate.cgi of the component Web Management Interface. The manipulation leads to use of hard-coded password. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-240364\. NOTE: The vendor was contacted early about this disclosure but did not respond in any way. Official description from the CVE record, published by VulDB. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-5222) ## Key data ### CVSS 3.1 Medium 6.3 Score published by VulDB in the CVE record. CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | Metric | Value | What it means | | ---------------------- | --------- | ------------------------------------------------------------------------------------- | | Attack vector | Adjacent | The attacker needs to be on the same shared network segment or a closely related one. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | None | No account or privileges are needed. | | User interaction | None | No action from any user is needed. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | Low | Limited effect on the secrecy of data. | | Integrity impact | Low | Limited effect on the trustworthiness of data. | | Availability impact | Low | Limited effect on availability. | ### CVSS 3.0 Medium 6.3 Score published by VulDB in the CVE record. CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | Metric | Value | What it means | | ---------------------- | --------- | ------------------------------------------------------------------------------------- | | Attack vector | Adjacent | The attacker needs to be on the same shared network segment or a closely related one. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | None | No account or privileges are needed. | | User interaction | None | No action from any user is needed. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | Low | Limited effect on the secrecy of data. | | Integrity impact | Low | Limited effect on the trustworthiness of data. | | Availability impact | Low | Limited effect on availability. | ### CVSS 2.0 Medium 5.8 Score published by VulDB in the CVE record. AV:A/AC:L/Au:N/C:P/I:P/A:P | Metric | Value | What it means | | ---------------------- | ---------------- | -------------------------------------------------------------------------------------- | | Access vector | Adjacent network | The attacker needs to be on the same shared network segment. | | Access complexity | Low | Specialized access conditions do not exist: the attack needs no special circumstances. | | Authentication | None | No authentication is needed. | | Confidentiality impact | Partial | Some data can be read. | | Integrity impact | Partial | Some data can be changed. | | Availability impact | Partial | Performance is reduced or some functions are interrupted. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.80402 (80.4% probability) Percentile 99.6% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA assessment as of Jul 9, 2024 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Public proof of concept recorded by CISA Automatable no Technical impact partial ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-259](https://cwe.mitre.org/data/definitions/259.html) Use of Hard-coded Password ## Affected products Products listed in the CVE record, as the CNA published them. - Viessmann Vitogate 300 - affected: 2.1.0 - affected: 2.1.1 - affected: 2.1.2 - affected: 2.1.3 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [vuldb.com/?id.240364](https://vuldb.com/?id.240364) vdb-entry technical-description - [vuldb.com/?ctiid.240364](https://vuldb.com/?ctiid.240364) signature permissions-required - [github.com/Push3AX/vul/blob/main/viessmann/Vitogate300\_Hard…](https://github.com/Push3AX/vul/blob/main/viessmann/Vitogate300%5FHardcodedPassword.md) exploit ## Timeline 1. ID reserved Sep 27, 2023 2. Record published Sep 27, 2023 3. Record last updated Aug 2, 2024 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:03 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)