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CVE-2018-3903
CRITICAL
On Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17, the video-core process incorrectly extracts fields from a user-controlled JSON payload, leading to a buffer overflow on the stack. An attacker can send an HTTP request to trigger this vulnerability. The memcpy call overflows the destination buffer, which has a size of 512 bytes. An attacker can send an arbitrarily long "url" value in order to overwrite the saved-PC with 0x42424242.
Published: Aug 23, 2018
Modified: Jun 17, 2026
CWE-787
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products (1)
| Vendor | Product | Version |
|---|---|---|
| samsung | sth-eth-250_firmware | 0.20.17 |
GitHub Security Advisory GHSA-rfq8-x5m9-6822
On Samsung SmartThings Hub STH-ETH-250 devices with firmware version 0.20.17, the video-core...
References (2)
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0574 Exploit, Third Party Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0574 Exploit, Third Party Advisory
Risk Scores
CVSS Score
9.9 / 10
EPSS Score
1.80%
Top 23% most likely to be exploited
Threat Score
40.1 / 100
Data Sources
NVD
EPSS
GitHub