What is the CVSS score of CVE-2019-6808?

CVE-2019-6808 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 8.2%.

Is there a public PoC exploit available for CVE-2019-6808?

Yes, a public proof-of-concept exploit is available for CVE-2019-6808. Prioritise patching immediately. EPSS: 8.2%.

Modicon Premium Firmware CVE-2019-6808

CRITICAL

Missing Authentication for Critical Function (CWE-306)

2019-05-22 cybersecurity@se.com

Authentication Bypass RCE Modicon Premium Firmware Modicon Quantum Firmware Modicon M340 Firmware Modicon M580 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 22, 2019 - 21:29 nvd

CRITICAL 9.8

DescriptionNVD

AnalysisAI

A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a remote code execution by. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a remote code execution by overwriting configuration settings of the controller over Modbus. Affected products include: Schneider-Electric Modicon Premium Firmware, Schneider-Electric Modicon Quantum Firmware, Schneider-Electric Modicon M340 Firmware, Schneider-Electric Modicon M580 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Require authentication for all sensitive operations, implement defense in depth.