CVE-2021-46304

Name: CVE-2021-46304
Creator: NVD / NIST
Published: 2022-08-10T12:15:11.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2021-46304 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions), CP-8000 MASTER MODULE WITH I/O -40/+70°C (All versions), CP-8021 MASTER MODULE (All versions), CP-8022 MASTER MODULE WITH GPRS (All versions). The component allows to activate a web server module which provides unauthenticated access to its web pages. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions), CP-8000 MASTER MODULE WITH I/O -40/+70°C (All versions), CP-8021 MASTER MODULE (All versions), CP-8022 MASTER MODULE WITH GPRS (All versions). The component allows to activate a web server module which provides unauthenticated access to its web pages. This could allow an attacker to retrieve debug-level information from the component such as internal network topology or connected systems.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.58%

43.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Siemens	Cp-8021 Master Module Firmware	All versions
Siemens	Cp-8000 Master Module With I\/O -25\/\+70 Firmware	All versions
Siemens	Cp-8000 Master Module With I\/O -40\/\+70 Firmware	All versions
Siemens	Cp-8022 Master Module With Gprs Firmware	All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-185638.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-185638.pdfVendor Advisory

Timeline

Published: Aug 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46304?

How severe is CVE-2021-46304?

CVE-2021-46304 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46304?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46304?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST