CRITICAL

CVE-2021-20093

Q: Is CVE-2021-20093 actively exploited?

Active exploitation of CVE-2021-20093 has not been confirmed. Its EPSS score was 33.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-20093?

CVE-2021-20093 has a CVSS v3 base score of 9.1 (CRITICAL severity).

CVSS v3

9.1

CRITICAL

EPSS Score

33.3 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-23-320-03 CISA4 known affected
Siemens Desigo CC product family
Desigo CC family V5.0 · Desigo CC family V5.1 · Desigo CC family V6
SSA-625850 Siemens ProductCERT4 known affected
SSA-625850: Multiple WIBU Systems CodeMeter Vulnerabilities Affecting the Desigo CC Product Family and SENTRON powermanager
Desigo CC family V5.0 · Desigo CC family V5.1 · Desigo CC family V6
ICSA-21-210-02 CISA10 known affected
Wibu-Systems CodeMeter Runtime
PSS(R)CAPE · SICAM 230 · SIMATIC Information Server
SSA-675303 Siemens ProductCERT10 known affected
SSA-675303: WIBU Systems CodeMeter Runtime Vulnerabilities in Siemens Products
PSS(R)CAPE · SICAM 230 · SIMATIC Information Server

Full record on NVD

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.

Technical details

Published: 2021-06-16

Frequently asked questions

What is CVE-2021-20093?

Is CVE-2021-20093 actively exploited?

Active exploitation of CVE-2021-20093 has not been confirmed. Its EPSS score was 33.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-20093?

CVE-2021-20093 has a CVSS v3 base score of 9.1 (CRITICAL severity).

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