CVE-2021-20093

high-risk
Published 2021-06-16

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.

Do I need to act?

~
8.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.1/10 Critical
NETWORK / LOW complexity

Affected Products (17)

Codemeter
Pss Cape
Sicam 230 Firmware
Simatic Information Server
Simatic Information Server
Simatic Wincc Oa
Simatic Wincc Oa
Simit Simulation Platform
Simit Simulation Platform
Simatic Process Historian
Simatic Process Historian

Affected Vendors

Siemens Wibu

References (8)

Mitigation https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-...
Patch https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf
Third Party Advisory https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02
Exploit https://www.tenable.com/security/research/tra-2021-24
Mitigation https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-...
Patch https://cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf
Third Party Advisory https://us-cert.cisa.gov/ics/advisories/icsa-21-210-02
Exploit https://www.tenable.com/security/research/tra-2021-24
60
/ 100
high-risk
Severity 31/34 · Critical
Exploitability 10/34 · Low
Exposure 19/34 · Moderate