CVE-2018-3909

Name: CVE-2018-3909
Creator: NVD / NIST
Published: 2018-08-24T00:29:00.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 1.25%

Last modified Jun 17, 2026

CVE-2018-3909 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The video-core process incorrectly handles pipelined HTTP requests, which allows successive requests to overwrite the previously parsed HTTP method, 'onmessagecomplete' callback. EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The video-core process incorrectly handles pipelined HTTP requests, which allows successive requests to overwrite the previously parsed HTTP method, 'onmessagecomplete' callback. An attacker can send an HTTP request to trigger this vulnerability.

Metrics

CVSS 3.1

8.6/10

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

EPSS Probability

1.25%

65.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-444

Affected Software

Vendor	Product	Versions
Samsung	Sth-Eth-250 Firmware	0.20.17

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0577Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0577Exploit, Third Party Advisory

Timeline

Published: Aug 24, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-3909?

How severe is CVE-2018-3909?

CVE-2018-3909 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.

How do I fix CVE-2018-3909?

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-2018-3909?

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

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Source: NVD / NIST