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 (A…

published 2022-08-10 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32993

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-22-223-05 updated 2022-08-09 cvss 4.3

Siemens SICAM A8000 Web Server Module

Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C Siemens CP-8000 MASTER MODULE WITH I/O -40/+70°C Siemens CP-8021 MASTER MODULE Siemens CP-8022 MASTER MODULE WITH GPRS
affected: mitigation, no fix planned

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 12 mo ago (2025-10-20)

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C
Siemens CP-8000 MASTER MODULE WITH I/O -40/+70°C
Siemens CP-8021 MASTER MODULE
Siemens CP-8022 MASTER MODULE WITH GPRS

Classification

Weakness

CWE-284 Improper Access Control

References

cert-portal.siemens.com /productcert/pdf/ssa-185638.pdf
vendor-advisory

Sources

CVE List CVE-2021-46304
NVD CVE-2021-46304

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Summary