CVE-2023-5222

MEDIUM EXPLOITED NUCLEI

Viessmann Vitogate 300 <2.1.3.0 - Hard-Coded Password

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2023-5222 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit demonstrates a command injection vulnerability in Viessmann Vitogate 300 devices by sending a crafted JSON payload to the `/cgi-bin/vitogate.cgi` endpoint, allowing remote code execution. The payload injects a command via the `ipaddr` parameter, and the exploit includes functionality to display hardcoded credentials.

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.

Exploits (1)

exploitdb WORKING POC
pythonremotehardware
https://www.exploit-db.com/exploits/51887

This exploit demonstrates a command injection vulnerability in Viessmann Vitogate 300 devices by sending a crafted JSON payload to the `/cgi-bin/vitogate.cgi` endpoint, allowing remote code execution. The payload injects a command via the `ipaddr` parameter, and the exploit includes functionality to display hardcoded credentials.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Viessmann Vitogate 300 <= 2.1.3.0
No auth needed
Prerequisites: Network access to the target device · Target device running vulnerable firmware
devstral-2 · analyzed Feb 19, 2026 Full analysis →

Nuclei Templates (1)

Viessmann Vitogate 300 - Hardcoded Password
CRITICALVERIFIEDby ritikchaddha
Shodan: title:"Vitogate 300"
FOFA: title="Vitogate 300"

References (3)

Core 3
Core References
Permissions Required, Third Party Advisory, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.240364
Permissions Required, Third Party Advisory, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.240364

Scores

CVSS v3 6.3
EPSS 0.7470
EPSS Percentile 99.4%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

VulnCheck KEV 2024-09-16
CWE
CWE-259
Status published
Products (1)
viessmann/vitogate_300_firmware < 2.1.3.0
Published Sep 27, 2023
Tracked Since Feb 18, 2026