CVE-2021-33716

Description

A vulnerability has been identified in SIMATIC CP 1543-1 (incl. SIPLUS variants) (All versions < V3.0), SIMATIC CP 1545-1 (All versions < V1.1). An attacker with access to the subnet of the affected device could retrieve sensitive information stored in cleartext.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory siemens.com
Affected: Siemens SIMATIC CP 1543-1 (incl. SIPLUS variants)
Affected: Siemens SIMATIC CP 1545-1
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-33716?
CVE-2021-33716 has been scored as a medium severity vulnerability.
How to fix CVE-2021-33716?
To fix CVE-2021-33716, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33716 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-33716 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-33716?
CVE-2021-33716 affects Siemens SIMATIC CP 1543-1 (incl. SIPLUS variants), Siemens SIMATIC CP 1545-1.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.