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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.
This record: live connection— last retrieved: 7 November 2026 at 02:05.
Vendor
Products
DeviceCare, FieldCare, Field Data Manager, Field Xpert, Proline Promag W 800 OPC/UA Connectivity Server, SupplyCare Enterprise
up to version 1.02.xx<=1.07.06
Published
16 June 2021
Last modified
17 June 2026
Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Attack vector
NETWORK
Privileges required
NONE
User interaction
NONE
Confidentiality
High
Integrity
None
Availability
High
Probability of exploitation within 30 days
33.3%
Percentile
98e
Source: FIRST.org, updated on 6 November 2026.
All vulnerabilities have already been fixed in several CodeMeter versions. Endress+Hauser recommends to use CodeMeter version >=7.40b. The version is available at https://www.wibu.com/support. For the Operating System WIN 7 it's recommended to update the operating system, use/re-install the Endress+Hauser Software Application supporting the newer operating system and update Code Meter to version >= 7.40b.
Our own interpretation and context for the source data above.
IACS Radar assessment
Our own interpretation and context for this vulnerability — not an official source.
IACS Radar priority score
Based on CVSS 9.1, EPSS 33.3%, industrial relevance 40/100.
Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.
Conditions for exploitation
Operational impact & energy relevance
Possible loss of visibility of or control over the process upon successful exploitation.
No strong energy-sector-specific signals recognised; general OT/ICS relevance.
Recommended defensive measures
Industrial relevance score
Classification is provisional; manual verification by an OT security analyst is recommended.
Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 7 November 2026.
IEC 62443 mapping
Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.