Out-of-bounds read in Wibu-Systems CodeMeter
Priority MEDIUM 40CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
A denial of service vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An unauthenticated remote attacker can exploit this issue to crash the CodeMeter Runtime Server.
Why it matters now
EPSS 0.04673 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Wibu-Systems CodeMeter: 7.21a
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Wibu-Systems CodeMeter | before 7.21a | 7.21a | Patch available | CNA |
- Wibu-Systems CodeMeter Vendor— Affected before 7.21a Fixed in 7.21a Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wibu:codemeter:*:*:*:*:*:*:*:* | before 7.21a | Vulnerable | Wibu |
| cpe:2.3:a:siemens:pss_cape:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:o:siemens:sicam_230_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
| cpe:2.3:h:siemens:sicam_230:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:a:wibu:codemeter:*:*:*:*:*:*:*:* Versions before 7.21a Vulnerable ·Wibu
- cpe:2.3:a:siemens:pss_cape:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:o:siemens:sicam_230_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
- cpe:2.3:h:siemens:sicam_230:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
- Fix · CNA Wibu-Systems CodeMeter Fixed in 7.21a
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20094
- 2026-10-03 Alias added: GHSA-fm8v-xp26-8h3q
References
Sources
- CVE-2021-20094 · CVE Program
- CVE-2021-20094 · NVD
- FIRST EPSS
- GHSA-fm8v-xp26-8h3q · GitHub Advisory Database · CC BY 4.0
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