Vulnerability Monitor

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CVE-2021-20093


A buffer over-read vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to disclose heap memory contents or crash the CodeMeter Runtime Server.


Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.1, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), and availability (service disruption) for affected systems. Impacting 11 products from wibu, from siemens, from siemens and 8 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-06-16T12:15:12.037

Last Modified

2024-11-21T05:45:54.840

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.1 (CRITICAL)

CVSSv2 Vector

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

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

10.0

Impact Score

4.9

Weaknesses
  • Type: Primary
    CWE-125

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application wibu codemeter ≤ 7.21a Yes
Application siemens pss_cape - Yes
Operating System siemens sicam_230_firmware * Yes
Hardware siemens sicam_230 - No
Application siemens simatic_information_server 2019 Yes
Application siemens simatic_information_server 2020 Yes
Application siemens simatic_pcs_neo < 3.1 Yes
Application siemens simatic_wincc_oa 3.17 Yes
Application siemens simatic_wincc_oa 3.18 Yes
Application siemens simit_simulation_platform < 10.3 Yes
Application siemens simit_simulation_platform 10.3 Yes
Application siemens sinec_infrastructure_network_services < 1.0.1.1 Yes
Application siemens sinec_infrastructure_network_services 1.0.1 Yes
Application siemens sinema_remote_connect_server < 3.0 Yes
Application siemens sinema_remote_connect_server 3.0 Yes
Application siemens sinema_remote_connect_server 3.0 Yes
Hardware siemens simatic_process_historian < 2020 Yes
Hardware siemens simatic_process_historian 2020 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For wibu's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.