CVE-2021-25659

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

A vulnerability has been identified in Automation License Manager 5 (All versions), Automation License Manager 6 (All versions < V6.0 SP9 Update 2). Sending specially crafted packets to port 4410/tcp of an affected system could lead to extensive memory being consumed and as such could cause a denial-of-service preventing legitimate users from using the system.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400

Affected software

VendorProductVersions
SiemensAutomation License Manager 5All versions
SiemensAutomation License Manager 6All versions < V6.0 SP9 Update 2

References

Timeline

Published
Aug 10, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-25659: High severity, CVSS 7.5 | Vulnix