What is the CVSS score of CVE-2018-20404?

CVE-2018-20404 has a CVSS 3.0 base score of 7.5 (High). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.5%.

Is there a public PoC exploit available for CVE-2018-20404?

Yes, a public proof-of-concept exploit is available for CVE-2018-20404. Prioritise patching immediately. EPSS: 1.5%.

Epia E900 Firmware CVE-2018-20404

HIGH

Improper Input Validation (CWE-20)

2018-12-26 cve@mitre.org

Denial Of Service Epia E900 Firmware

7.5

CVSS 3.0 · 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:3.0/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

Dec 26, 2018 - 21:29 nvd

HIGH 7.5

DescriptionNVD

AnalysisAI

ETK_E900.sys, a SmartETK driver for VIA Technologies EPIA-E900 system board, is vulnerable to denial of service attack via IOCTL 0x9C402048, which calls memmove and constantly fails on an arbitrary. Rated high severity (CVSS 7.5), 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 under CWE-20. ETK_E900.sys, a SmartETK driver for VIA Technologies EPIA-E900 system board, is vulnerable to denial of service attack via IOCTL 0x9C402048, which calls memmove and constantly fails on an arbitrary (uncontrollable) address, resulting in an eternal hang or a BSoD. Affected products include: Viatech Epia-E900 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.