CVE-2018-3926

Name: CVE-2018-3926
Creator: NVD / NIST
Published: 2018-08-28T17:29:02.063+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2018-3926 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An exploitable integer underflow vulnerability exists in the ZigBee firmware update routine of the hubCore binary of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process incorrectly handles malformed files existing in its data directory, leading to an infinite loop, which eventually causes the process to crash. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

An exploitable integer underflow vulnerability exists in the ZigBee firmware update routine of the hubCore binary of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process incorrectly handles malformed files existing in its data directory, leading to an infinite loop, which eventually causes the process to crash. An attacker can send an HTTP request to trigger this vulnerability.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.42%

33.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-191

Affected Software

Vendor	Product	Versions
Samsung	Sth-Eth-250 Firmware	0.20.17

References

http://www.securityfocus.com/bid/105162Broken Link, Third Party Advisory, VDB Entry
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0593Exploit, Third Party Advisory
http://www.securityfocus.com/bid/105162Broken Link, Third Party Advisory, VDB Entry
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0593Exploit, Third Party Advisory

Timeline

Published: Aug 28, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-3926?

How severe is CVE-2018-3926?

CVE-2018-3926 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2018-3926?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-3926?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST