How severe is CVE-2018-3894?

CVE-2018-3894 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-2018-3894 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3894?

CVE-2018-3894 affects Samsung Sth-eth-250 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3894?

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-2018-3894 published?

CVE-2018-3894 was published on 2018-09-21 and last updated on 2026-06-17.

CVE-2018-3894

CVE-2018-3894 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Samsung Sth-eth-250 Firmware
Published: 2018-09-21
Last modified: 2026-06-17

Description

An exploitable buffer overflow vulnerability exists in the /cameras/XXXX/clips handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250-Firmware version 0.20.17. The strncpy call overflows the destination buffer, which has a size of 52 bytes. An attacker can send an arbitrarily long "startTime" value in order to exploit this vulnerability.

Frequently asked questions

What is CVE-2018-3894?: An exploitable buffer overflow vulnerability exists in the /cameras/XXXX/clips handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250-Firmware version 0.20.17. The strncpy call overflows the destination buffer, which has a size of 52 bytes. An attacker can send an arbitrarily long "startTime" value in order to exploit this vulnerability.
How severe is CVE-2018-3894?: CVE-2018-3894 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-2018-3894 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3894?: CVE-2018-3894 affects Samsung Sth-eth-250 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3894?: 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-2018-3894 published?: CVE-2018-3894 was published on 2018-09-21 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0570

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…

All CVEs affecting Samsung Sth-eth-250 Firmware →

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →