An exploitable integer underflow vulnerability exists in the ZigBee firmware update routine of the hubCore binary of the Samsung SmartThing…

Published 8 y ago 2018-08-28 · modified 4 mo ago 2026-06-17 · JSON

CVSS

5.3

v3.0 · CNA

CISA KEV

not known exploited

EPSS

0.4%

percentile 37%

Public exploits

none known

An exploitable integer underflow vulnerability exists in the ZigBee firmware update routine of the hubCore binary of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process incorrectly handles malformed files existing in its data directory, leading to an infinite loop, which eventually causes the process to crash. An attacker can send an HTTP request to trigger this vulnerability.

Exploit prediction (EPSS)

0.42% probability of exploitation in the next 30 days, higher than 37% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.0	5.3	`CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H`
NVD	3.1	5.5	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`
CNA	3.0	5.3	`CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H`
NVD	2.0	4.9	`AV:L/AC:L/Au:N/C:N/I:N/A:C`

Affected products

Talos Samsung

Classification

Weakness

CWE-191 Integer Underflow (Wrap or Wraparound)

References

securityfocus.com /bid/105162 · vdb-entry, x_refsource_BID, x_transferred
talosintelligence.com /vulnerability_reports/TALOS-2018-0593 · x_refsource_MISC, x_transferred

Sources

CVE List: CVE-2018-3926
NVD: CVE-2018-3926

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