CVE-2021-20093

Public Exploit

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.

References

Link	Tags
https://www.tenable.com/security/research/tra-2021-24	exploit third party advisory patch
https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-01.pdf	mitigation vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf	third party advisory patch
https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02	third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2021-20093?: CVE-2021-20093 has been scored as a critical severity vulnerability.
How to fix CVE-2021-20093?: To fix CVE-2021-20093, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-20093 being actively exploited in the wild?: It is possible that CVE-2021-20093 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20093?: CVE-2021-20093 affects n/a Wibu-Systems CodeMeter.

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Description

Category

CWE-125 – Out-of-bounds Read

References

Frequently Asked Questions