What is the CVSS score of CVE-2021-20094?

CVE-2021-20094 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 4.7%.

Is there a public PoC exploit available for CVE-2021-20094?

Yes, a public proof-of-concept exploit is available for CVE-2021-20094. Prioritise patching immediately. EPSS: 4.7%.

Is there a patch available for CVE-2021-20094?

Yes, a patch is available for CVE-2021-20094. Update the affected software to the latest version immediately.

Codemeter CVE-2021-20094

HIGH

Out-of-bounds Read (CWE-125)

2021-06-16 vulnreport@tenable.com

Buffer Overflow Denial Of Service Information Disclosure Codemeter Pss Cape Sicam 230 Firmware

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Jun 16, 2021 - 12:15 nvd

HIGH 7.5

DescriptionNVD

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.

AnalysisAI

A denial of service vulnerability exists in Wibu-Systems CodeMeter versions < 7.21a. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. 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. Affected products include: Wibu Codemeter, Siemens Pss Cape, Siemens Sicam 230 Firmware.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.