Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-27632


In SIMATIC MV400 family versions prior to v7.0.6, the ISN generator is initialized with a constant value and has constant increments. An attacker could predict and hijack TCP sessions.


Published

2021-03-10T18:15:12.797

Last Modified

2024-11-21T05:21:32.823

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

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

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    NVD-CWE-noinfo

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System siemens simatic_mv420_firmware < 7.0.6 Yes
Hardware siemens simatic_mv420 - No
Operating System siemens simatic_mv440_firmware < 7.0.6 Yes
Hardware siemens simatic_mv440 - No

References