How severe is CVE-2018-3879?

CVE-2018-3879 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-3879 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3879?

CVE-2018-3879 affects Samsung Sth-eth-250 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3879?

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-2018-3879 published?

CVE-2018-3879 was published on 2018-08-23 and last updated on 2026-06-17.

CVE-2018-3879

CVE-2018-3879 is a high-severity vulnerability in Samsung Sth-eth-250 Firmware with a CVSS 3.x base score of 8.8. 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-89.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Samsung Sth-eth-250 Firmware
Published: 2018-08-23
Last modified: 2026-06-17

Description

An exploitable JSON injection vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17. The video-core process incorrectly parses the user-controlled JSON payload, leading to a JSON injection which in turn leads to a SQL injection in the video-core database. An attacker can send a series of HTTP requests to trigger this vulnerability.

Frequently asked questions

What is CVE-2018-3879?: An exploitable JSON injection vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17. The video-core process incorrectly parses the user-controlled JSON payload, leading to a JSON injection which in turn leads to a SQL injection in the video-core database. An attacker can send a series of HTTP requests to trigger this vulnerability.
How severe is CVE-2018-3879?: CVE-2018-3879 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-3879 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3879?: CVE-2018-3879 affects Samsung Sth-eth-250 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3879?: 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-2018-3879 published?: CVE-2018-3879 was published on 2018-08-23 and last updated on 2026-06-17.

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0556

Affected products (1)

cpe:2.3:o:samsung:sth-eth-250_firmware:0.20.17:*:*:*:*:*:*:*

More vulnerabilities in Samsung Sth-eth-250 Firmware

CVE-2018-3907 — Critical (CVSS 10.0): An exploitable vulnerability exists in the REST parser of video-core's HTTP server of the Samsung SmartThings Hub…
CVE-2018-3877 — Critical (CVSS 9.9): An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung…
CVE-2018-3874 — Critical (CVSS 9.9): An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung…
CVE-2018-3873 — Critical (CVSS 9.9): An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung…
CVE-2018-3875 — Critical (CVSS 9.9): An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung…
CVE-2018-3904 — Critical (CVSS 9.9): An exploitable buffer overflow vulnerability exists in the camera 'update' feature of video-core's HTTP server of…

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