CVE-2018-3856

Name: CVE-2018-3856
Creator: NVD / NIST
Published: 2018-08-23T22:29:00.243+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.9/10EPSS 3.44%

Last modified Jun 17, 2026

CVE-2018-3856 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. An exploitable vulnerability exists in the smart cameras RTSP configuration of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The device incorrectly handles spaces in the URL field, leading to an arbitrary operating system command injection. EPSS estimates a 3.44% chance of exploitation in the next 30 days.

Description

An exploitable vulnerability exists in the smart cameras RTSP configuration of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The device incorrectly handles spaces in the URL field, leading to an arbitrary operating system command injection. An attacker can send a series of HTTP requests to trigger this vulnerability.

Metrics

CVSS 3.1

9.9/10

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

EPSS Probability

3.44%

87.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-88

Affected Software

Vendor	Product	Versions
Samsung	Sth-Eth-250 Firmware	0.20.17

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0539Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0539Exploit, Third Party Advisory

Timeline

Published: Aug 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-3856?

How severe is CVE-2018-3856?

CVE-2018-3856 has a CVSS score of 9.9/10 (CRITICAL severity). The EPSS model estimates a 3.44% probability of exploitation in the next 30 days.

How do I fix CVE-2018-3856?

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-2018-3856?

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

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Source: NVD / NIST