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CVE-2026-81573
If CodeMeter Runtime before 8.41a or 9.10 is configured as a server, the configuration command handler does not enforce network- origin restrictions. Commands intended only for local or same-network clients can therefore be executed by arbitrary remote peers. An attacker can read potentially sensitive configuration data and overwrite selected values in Server.ini. This does include the hash of the credentials for the CodeMeter WebAdmin, enabling WebAdmin takeover.
This record: live connection— last retrieved: 8 November 2026 at 10:21.
Vendors
Products
AC 800PEC, AbilityTM zenon, Automation Builder, Industrial PCs, Robot guidance systems, Edge computing devices and 11 more
up to version <5.4.5.2
Published
27 August 2026
Last modified
1 September 2026
Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.
If CodeMeter Runtime before 8.41a or 9.10 is configured as a server, the configuration command handler does not enforce network- origin restrictions. Commands intended only for local or same-network clients can therefore be executed by arbitrary remote peers. An attacker can read potentially sensitive configuration data and overwrite selected values in Server.ini. This does include the hash of the credentials for the CodeMeter WebAdmin, enabling WebAdmin takeover.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Attack vector
NETWORK
Privileges required
NONE
User interaction
NONE
Confidentiality
Limited
Integrity
High
Availability
Limited
Probability of exploitation within 30 days
0.4%
Percentile
34e
Source: FIRST.org, updated on 7 November 2026.
For CVE-2026-81573, CVE-2026-81574, CVE-2026-81575, and CVE-2026-81576: If you enabled the network server functionality at some point but no longer need it, disable it: - Open the Registry Editor and navigate to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\ WIBUSYSTEMS\CodeMeter\Server\CurrentVersion\, then change the value of IsNetworkServerfrom 1 to 0. - Restart CodeMeter.
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 8.6, EPSS 0.4%, industrial relevance 55/100.
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
Limited impact on availability; the risk lies mainly with confidentiality or integrity of process data.
Assessed as relevant to the energy sector based on: Vermeld in een officiële CISA ICS Advisory, wat directe relevantie voor industriële besturingssystemen bevestigt. Vendor "ABB" is a known supplier of equipment for the energy sector.
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 8 November 2026.
IEC 62443 mapping
Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.