How severe is CVE-2018-20404?

CVE-2018-20404 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-20404 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20404?

CVE-2018-20404 affects Viatech Epia-e900 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20404?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-20404 published?

CVE-2018-20404 was published on 2018-12-26 and last updated on 2026-06-17.

CVE-2018-20404

CVE-2018-20404 is a high-severity vulnerability in Viatech Epia-e900 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Viatech Epia-e900 Firmware
Published: 2018-12-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-20404?: 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.
How severe is CVE-2018-20404?: CVE-2018-20404 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-20404 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20404?: CVE-2018-20404 affects Viatech Epia-e900 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20404?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-20404 published?: CVE-2018-20404 was published on 2018-12-26 and last updated on 2026-06-17.

References

https://downwithup.github.io/CVEPosts.html

Affected products (1)

cpe:2.3:o:viatech:epia-e900_firmware:-:*:*:*:*:*:*:*

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