Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
5 results
Sep 22, 2025The Vitogate 300 web interface fails to enforce proper server-side authentication and relies on frontend-based authentication controls.CVE-2025-9495 · Other software · Viessmann · reported by productsecurity@carrier.comHigh 8.7
The Vitogate 300 web interface fails to enforce proper server-side authentication and relies on frontend-based authentication controls. This allows an attacker to simply modify HTML elements in the browser’s developer tools to bypass login restrictions. By removing specific UI elements, an attacker can reveal the hidden administration menu, giving them full control over the device.
- Product
- Vitogate 300
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 22, 2025An OS command injection vulnerability has been discovered in the Vitogate 300, which can be exploited by malicious users to compromise affected installations.CVE-2025-9494 · Other software · Viessmann · reported by productsecurity@carrier.comHigh 8.5
An OS command injection vulnerability has been discovered in the Vitogate 300, which can be exploited by malicious users to compromise affected installations. Specifically, the `/cgi-bin/vitogate.cgi` endpoint is affected, when the `form` JSON parameter is set to `form-0-2`. The vulnerability stems from the fact that that function at offset 0x21c24 does not properly sanitize supplied input before interpolating it into a format string which gets passed to `popen()`. Consequently, an authenticated attacker is able to inject arbitrary OS commands and thus gain code execution on affected devices.
- Product
- Vitogate 300
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 22, 2023A vulnerability was found in Viessmann Vitogate 300 up to 2.1.3.0 and classified as problematic.CVE-2023-5702 · Other software · Viessmann · reported by VulDBMedium 4.3
A vulnerability was found in Viessmann Vitogate 300 up to 2.1.3.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /cgi-bin/. The manipulation leads to direct request. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-243140. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
- Product
- Vitogate 300
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2023In Vitogate 300 2.1.3.0, /cgi-bin/vitogate.cgi allows an unauthenticated attacker to bypass authentication and execute arbitrary commands via shell metacharacteCVE-2023-45852 · Other software · Viessmann · reported by MITRECritical 9.8
In Vitogate 300 2.1.3.0, /cgi-bin/vitogate.cgi allows an unauthenticated attacker to bypass authentication and execute arbitrary commands via shell metacharacters in the ipaddr params JSON data for the put method.
- Product
- Vitogate 300 Firmware
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordconnectivity.viessmann.comgithub.com
Sep 27, 2023A vulnerability classified as critical was found in Viessmann Vitogate 300 up to 2.1.3.0.CVE-2023-5222 · Other software · Viessmann · reported by VulDBMedium 6.3
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.
- Product
- Vitogate 300
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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