Vulnerability Details : CVE-2020-12521

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS a specially crafted LLDP packet may lead to a high system load in the PROFINET stack. An attacker can cause failure of system services or a complete reboot.
Published 2020-12-17 23:15:13
Updated 2020-12-21 18:28:05
Source CERT VDE
View at NVD,   CVE.org
Vulnerability category: Input validation

Exploit prediction scoring system (EPSS) score for CVE-2020-12521

EPSS FAQ
0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 23 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-12521

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.1
 MEDIUM AV:A/AC:L/Au:N/C:N/I:N/A:C
6.5
6.9
 NIST
6.5
 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
 CERT VDE
6.5
 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
 NIST

CWE ids for CVE-2020-12521

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by:
    • info@cert.vde.com (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2020-12521

Products affected by CVE-2020-12521

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