CVE-2021-25659

HIGH

Automation License Manager 5.x and 6.x < 6.0.9 - Denial of Service via Crafted Packets to Port 4410

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://cert-portal.siemens.com/productcert/pdf/ssa-158827.pdf

Scores

CVSS v3 7.5
EPSS 0.0044
EPSS Percentile 63.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (1)
siemens/automation_license_manager 5.0.0 - 6.0.9
Published Aug 10, 2021
Tracked Since Feb 18, 2026