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
2- Wibu-Systems/CodeMeterdescription
- 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
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