CVE-2021-20094
A denial of service vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-20094- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-20094- Updated
- 2026-11-02
EUVDEUVD-2021-7551 No score
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.
- Record
EUVD-2021-7551- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fm8v-xp26-8h3q
A denial of service vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. An...
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.
- Record
GHSA-fm8v-xp26-8h3q- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20094 is a high vulnerability (CVSS 7.5) in Wibu Codemeter, published June 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.67%, the 91st percentile. No source names a fixed version.
References
tenable.com/security/research/tra-2021-24
cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/Advisory_WIBU-210423-02.pdf
cert-portal.siemens.com/productcert/pdf/ssa-675303.pdf
us-cert.cisa.gov/ics/advisories/icsa-21-210-02
nvd.nist.gov/vuln/detail/CVE-2021-20094
github.com/advisories/GHSA-fm8v-xp26-8h3q