What’s Vulnerable › Vulnerabilities

CVE-2023-5222: Viessmann Vitogate 300 Web Management Interface vitogate.cgi isValidUser hard-coded password

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 80.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-27 · updated 2026-06-17
• Weakness: CWE-259

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.

Affected products

• Viessmann Vitogate 300: through 2.1.3.0

References

• https://github.com/Push3AX/vul/blob/main/viessmann/Vitogate300_HardcodedPassword.md
• https://vuldb.com/?ctiid.240364
• https://vuldb.com/?id.240364
• https://github.com/Push3AX/vul/blob/main/viessmann/Vitogate300_HardcodedPassword.md
• https://vuldb.com/?ctiid.240364
• https://vuldb.com/?id.240364

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