Critical severity9.1NVD Advisory· Published Jun 16, 2021· Updated Jun 17, 2026
CVE-2021-20093
CVE-2021-20093
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
19- cpe:2.3:a:siemens:pss_cape:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_information_server:2019:sp1:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:siemens:simatic_information_server:2019:sp1:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_information_server:2020:-:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_wincc_oa:3.17:-:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:siemens:simatic_wincc_oa:3.17:-:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_oa:3.18:-:*:*:*:*:*:*
cpe:2.3:a:siemens:simit_simulation_platform:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:siemens:simit_simulation_platform:*:*:*:*:*:*:*:*range: >=10.0,<10.3
- cpe:2.3:a:siemens:simit_simulation_platform:10.3:-:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*range: <1.0.1.1
- cpe:2.3:a:siemens:sinec_infrastructure_network_services:1.0.1:-:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*range: <3.0
- cpe:2.3:a:siemens:sinema_remote_connect_server:3.0:-:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinema_remote_connect_server:3.0:sp1:*:*:*:*:*:*
cpe:2.3:a:wibu:codemeter:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:wibu:codemeter:*:*:*:*:*:*:*:*range: <=7.21a
- (no CPE)
cpe:2.3:h:siemens:simatic_process_historian:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:h:siemens:simatic_process_historian:*:*:*:*:*:*:*:*range: >=2019,<2020
- cpe:2.3:h:siemens:simatic_process_historian:2020:-:*:*:*:*:*:*
- cpe:2.3:o:siemens:sicam_230_firmware:*:*:*:*:*:*:*:*
- Range: <7.21a
Patches
Vulnerability mechanics
References
4- cert-portal.siemens.com/productcert/pdf/ssa-675303.pdfnvdPatchThird Party Advisory
- www.tenable.com/security/research/tra-2021-24nvdExploitPatchThird Party Advisory
- cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-01.pdfnvdMitigationVendor Advisory
- us-cert.cisa.gov/ics/advisories/icsa-21-210-02nvdThird Party AdvisoryUS Government Resource
News mentions
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