CVE-2021-44221

Name: CVE-2021-44221
Creator: NVD / NIST
Published: 2022-07-12T10:15:09.977+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2021-44221 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability has been identified in SIMATIC eaSie Core Package (All versions < V22.00). The affected systems do not properly validate input that is sent to the underlying message passing framework. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SIMATIC eaSie Core Package (All versions < V22.00). The affected systems do not properly validate input that is sent to the underlying message passing framework. This could allow an remote attacker to trigger a denial of service of the affected system.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.24%

65.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Simatic Easie Core Package	< 22.00

References

https://cert-portal.siemens.com/productcert/pdf/ssa-580125.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-580125.pdfPatch, Vendor Advisory

Timeline

Published: Jul 12, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44221?

How severe is CVE-2021-44221?

CVE-2021-44221 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44221?

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-2021-44221?

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

Scan your code now

Source: NVD / NIST