CVE-2021-44524

Name: CVE-2021-44524
Creator: NVD / NIST
Published: 2021-12-14T12:15:12.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.58%

Last modified Jun 17, 2026

CVE-2021-44524 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability has been identified in SiPass integrated V2.76 (All versions), SiPass integrated V2.80 (All versions), SiPass integrated V2.85 (All versions), Siveillance Identity V1.5 (All versions), Siveillance Identity V1.6 (All versions < V1.6.284.0). Affected applications insufficiently limit the access to the internal user authentication service. EPSS estimates a 1.58% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SiPass integrated V2.76 (All versions), SiPass integrated V2.80 (All versions), SiPass integrated V2.85 (All versions), Siveillance Identity V1.5 (All versions), Siveillance Identity V1.6 (All versions < V1.6.284.0). Affected applications insufficiently limit the access to the internal user authentication service. This could allow an unauthenticated remote attacker to trigger several actions on behalf of valid user accounts.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.58%

72.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Sipass Integrated	2.76
Siemens	Sipass Integrated	2.80
Siemens	Sipass Integrated	2.85
Siemens	Siveillance Identity	>= 1.6, <= 1.6.284.0
Siemens	Siveillance Identity	1.5

References

https://cert-portal.siemens.com/productcert/pdf/ssa-160202.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-463116.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-160202.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-463116.pdfVendor Advisory

Timeline

Published: Dec 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44524?

How severe is CVE-2021-44524?

CVE-2021-44524 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.58% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44524?

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-2021-44524?

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

Scan your code now

Source: NVD / NIST