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High severity7.5NVD Advisory· Published Aug 10, 2021· Updated Jun 17, 2026

CVE-2021-25659

CVE-2021-25659

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.

Affected products

4
  • Siemens Foundation/Automation License Manager4 versions
    cpe:2.3:a:siemens:automation_license_manager:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:a:siemens:automation_license_manager:*:*:*:*:*:*:*:*range: >=5.0.0,<6.0.9
    • (no CPE)range: < V6.0 SP9 Update 2
    • (no CPE)range: All versions
    • (no CPE)range: All versions < V6.0 SP9 Update 2

Patches

Vulnerability mechanics

References

1

News mentions

0

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