What is CVE-2018-3906?

CVE-2018-3906 is a high-severity vulnerability in Samsung Smartthings Hub Sth-Eth-250, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2018-09-21.

How severe is CVE-2018-3906?

High severity. CVSS v3 base score is 8.2 out of 10.

Buffer overflow in Samsung Smartthings Hub Sth-Eth-250

CVE-2018-3906

An exploitable stack-based buffer overflow vulnerability exists in the retrieval of a database field in video-core's HTTP server of Samsung SmartThings Hub. The video-core process insecurely extracts the shard.videoHostURL field from its SQLite database, leading to a buffer overflow on the stack. An attacker can send an HTTP request to trigger this vulnerability.

Vulnerability class: Buffer Overflow

Published 2018-09-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (32.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Samsung Smartthings Hub Sth-Eth-250 — versions Firmware version 0.20.17
Samsung Sth-Eth-250
Samsung Sth-Eth-250 Firmware — versions 0.20.17

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

talosintelligence.com/vulnerability_reports/TALOS-2018-0576 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-3906?: CVE-2018-3906 is a high-severity vulnerability in Samsung Smartthings Hub Sth-Eth-250, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2018-09-21.
How severe is CVE-2018-3906?: High severity. CVSS v3 base score is 8.2 out of 10.