9.9

CVE-2018-3863: samsung smartthings hub sth-eth-250 Out-of-bounds Write

CVSS: 9.9v3.0CriticalModified
Published 23-08-2018Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2018-3863 is a critical (CVSS 9.9) Out-of-bounds Write vulnerability in samsung smartthings hub sth-eth-250. EPSS estimates a 1.74% chance of exploitation in the next 30 days, higher than 77.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.0 (CVE.org)
EPSS score
1.74%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 23-08-2018
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

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. A strcpy overflows the destination buffer, which has a size of 40 bytes. An attacker can send an arbitrarily long "user" value in order to exploit this vulnerability.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

1.74%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

0.00 pp

From 1.74% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.74%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (talosintelligence.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Samsung2 products

1 vendor · 2 products

References

1 links