ICSA-21-210-02: Wibu-Systems CodeMeter Runtime
CISA advisory · released 2021-07-13
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 5, 2025-05-06 (final)
CISA's summary
Summary: WIBU Systems published information about two vulnerabilities and an associated fix release version of CodeMeter Runtime, a product provided by WIBU Systems and used in several Siemens products for license management. The vulnerabilities are described in the section "Vulnerability Classification" below and got assigned the CVE IDs CVE-2021-20093 and CVE-2021-20094. Successful exploitation of these vulnerabilities could allow an attacker to read data from the heap of the CodeMeter Runtime network server, or crash the CodeMeter Runtime Server (i.e., CodeMeter.exe). Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | PSS(R)CAPE | CAPE_14_installations_installed_from_material_dated_earlier_than_2021-06-16 |
| Siemens | SICAM 230 | vers:all/* |
| Siemens | SIMATIC Information Server | >=2019_SP1_<2020_Upd1 |
| Siemens | SIMATIC PCS neo | <V3.1 |
| Siemens | SIMATIC Process Historian (incl. Process Historian OPC UA Server) | >=2019_<2020_Upd1 |
| Siemens | SIMATIC WinCC OA V3.17 | <V3.17_P013 |
| Siemens | SIMATIC WinCC OA V3.18 | <V3.18_P002 |
| Siemens | SIMIT Simulation Platform | >=V10.0_<V10.3_Upd_1 |
| Siemens | SINEC INS | <V1.0.1_Update_1 |
| Siemens | SINEMA Remote Connect Server | <V3.0_SP2 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2021-20093 — CVE-2021-20093 · CWE-126
A buffer over-read vulnerability in the CodeMeter Runtime network server could cause the server to return packets containing data from the heap. An unauthenticated remote attacker could exploit this issue to disclose heap memory contents or crash the CodeMeter Runtime Server (i.e., CodeMeter.exe).
- CVE-2021-20094 — CVE-2021-20094 · CWE-126
A buffer over-read vulnerability in the HTTP(S) service of the CodeMeter Runtime CmWAN server could cause the server to crash. An unauthenticated remote attacker with access to the CmWAN port could exploit this issue to crash the CodeMeter Runtime Server (i.e., CodeMeter.exe).
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting these vulnerabilities to CISA.
The advisory's legal notice
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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