Web Server Vulnerability in SCALANCE Products by Siemens
CVE-2021-25668

9.8CRITICAL

Key Information:

Vendor

Siemens
Status
Scalance X200-4p Irt
Scalance X201-3p Irt
Scalance X201-3p Irt Pro
Scalance X202-2 Irt
Vendor
CVE Published:
22 April 2021

What is CVE-2021-25668?

A vulnerability exists in various SCALANCE products due to improper processing of POST requests in the web server. This flaw can lead to out-of-bounds writes in the heap memory, ultimately allowing an attacker to cause a denial-of-service condition. In some scenarios, this vulnerability could be exploited to execute arbitrary code remotely, posing serious risks to the integrity and availability of the affected devices.

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Affected Version(s)

SCALANCE X200-4P IRT All versions < 5.5.1

SCALANCE X201-3P IRT All versions < 5.5.1

SCALANCE X201-3P IRT PRO All versions < 5.5.1

References

https://cert-portal.siemens.com/productcert/pdf/ssa-18709...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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