How many CVEs does Viessmann have?

Viessmann has 5 published CVE records since 2023, including 2 in the last two years.

How many Viessmann CVEs are in CISA KEV?

None of Viessmann's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which Viessmann products have the most CVEs?

The Viessmann products with the most published CVEs are Vitogate 300, vitogate 300 firmware.

What are the most common weakness types in Viessmann CVEs?

Viessmann's CVEs most often map to these CWE weakness types: CWE-259 (Use of Hard-coded Password), CWE-425 (Direct Request ('Forced Browsing')), CWE-602 (Client-Side Enforcement of Server-Side Security), CWE-78 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).

Are there public exploits for Viessmann vulnerabilities?

Yes — 3 of Viessmann's CVEs have a known public exploit.

How many critical Viessmann vulnerabilities are there?

Viessmann has 2 critical and 2 high-severity CVEs.

What is the average severity of Viessmann CVEs?

The average CVSS base score across Viessmann's scored CVEs is 8.7.

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5 CVEs

Viessmann Vulnerabilities

Name: Viessmann vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for Viessmann.

5

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

3

Public exploits

PoC or exploit code

8.7

Avg CVSS

2023–2025

Overview

Viessmann has 5 published CVE records since 2023, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 3 have a known public exploit. The average CVSS base score across scored CVEs is 8.7.

This page aggregates every publicly disclosed vulnerability (CVE) affecting Viessmann products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on Viessmann's vulnerability posture, as a share of its 5 published CVEs.

Average CVSS: 8.7
Critical / high: 80%
Actively exploited (KEV): 0%
Public exploit available: 60%
Patch available: 40%

Severity and exploitation

How the CVSS severity of Viessmann's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical2

High2

Medium1

Low0

In CISA’s Known Exploited Vulnerabilities catalog

0

None of Viessmann's CVEs are currently listed in CISA's KEV catalog.

Public exploits

3

3 of Viessmann's CVEs have a known public exploit available.

Most affected products

The Viessmann products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

Common weakness types

The CWE weakness categories most often found in Viessmann CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish Viessmann CVE records.

Disclosure activity by year

How many Viessmann CVEs were published each year.

2023

3

2025

2

Latest Viessmann CVEs

The most recently disclosed vulnerabilities affecting Viessmann.

Viessmann Vitogate 300 Authentication Bypass
CWE-602
High · CVSS 8.7
EPSS 0.3%2025-09-23
Viessmann Vitogate 300 OS Command Injection
CWE-78
High · CVSS 8.5
EPSS 0.7%2025-09-23
Medium vulnerability · 2023-10-23
CWE-425
Medium · CVSS 6.5
EPSS 14.5%2023-10-23
Critical vulnerability · 2023-10-14
Critical · CVSS 9.8
EPSS 14.0%2023-10-14
Critical vulnerability · 2023-09-27
CWE-259
Critical · CVSS 9.8
EPSS 74.5%2023-09-27

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Frequently asked questions

Common questions about Viessmann vulnerabilities.

How many CVEs does Viessmann have?: Viessmann has 5 published CVE records since 2023, including 2 in the last two years.
How many Viessmann CVEs are in CISA KEV?: None of Viessmann's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which Viessmann products have the most CVEs?: The Viessmann products with the most published CVEs are Vitogate 300, vitogate 300 firmware.
What are the most common weakness types in Viessmann CVEs?: Viessmann's CVEs most often map to these CWE weakness types: CWE-259 (Use of Hard-coded Password), CWE-425 (Direct Request ('Forced Browsing')), CWE-602 (Client-Side Enforcement of Server-Side Security), CWE-78 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).
Are there public exploits for Viessmann vulnerabilities?: Yes — 3 of Viessmann's CVEs have a known public exploit.
How many critical Viessmann vulnerabilities are there?: Viessmann has 2 critical and 2 high-severity CVEs.
What is the average severity of Viessmann CVEs?: The average CVSS base score across Viessmann's scored CVEs is 8.7.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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