Siemens CP-8000 MASTER MODULE Web Server access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Siemens CP-8000 MASTER MODULE, CP-8021 MASTER MODULE and CP-8022 MASTER MODULE WITH GPRS. Impacted is an unknown function of the component Web Server Module. The manipulation results in access control. This vulnerability is identified as CVE-2021-46304. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Siemens CP-8000 MASTER MODULE, CP-8021 MASTER MODULE and CP-8022 MASTER MODULE WITH GPRS (affected version unknown). Affected is an unknown functionality of the component Web Server Module. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality. CVE summarizes:

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.

The weakness was released 08/10/2022 as ssa-185638. The advisory is available at cert-portal.siemens.com. This vulnerability is traded as CVE-2021-46304 since 01/14/2022. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/20/2025). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/14/2022 🔍
08/10/2022 +207 days 🔍
08/10/2022 +0 days 🔍
10/20/2025 +1167 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-185638
Status: Confirmed

CVE: CVE-2021-46304 (🔍)
GCVE (CVE): GCVE-0-2021-46304
GCVE (VulDB): GCVE-100-206046

Entryinfo

Created: 08/10/2022 18:25
Updated: 10/20/2025 20:58
Changes: 08/10/2022 18:25 (38), 09/04/2022 12:03 (11), 10/20/2025 20:58 (15)
Complete: 🔍
Cache ID: 216::103

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