Vulnerability Monitor

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CVE-2014-2251

The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.

Published

2014-03-16T14:06:45.867

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 8.3 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:C

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: COMPLETE
Exploitability Score

8.6

Impact Score

8.5

Weaknesses
  • Type: Primary
    NVD-CWE-Other
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System siemens simatic_s7-1500_cpu_firmware ≤ 1.1.2 Yes
Operating System siemens simatic_s7-1500_cpu_firmware 1.0.1 Yes
Operating System siemens simatic_s7-1500_cpu_firmware 1.1.0 Yes
Operating System siemens simatic_s7-1500_cpu_firmware 1.1.1 Yes
References