CVE-2017-16336Public exploitNetwork attack vector

Authenticated code execution via unbounded s_value copy

Published Jan 11, 2023 · Updated Apr 8, 2025

Stack-based buffer overflow in Insteon Hub firmware 1012 allows remote authenticated users to execute code through PubNub commands. The cmd s_event_var handler copies the s_value JSON field with strcpy into a 244-byte stack buffer without enforcing a length limit. PubNub authentication is required; oversized input overwrites stack data and can redirect execution on the Hub.

CVSS severity8.5
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Insteon Hub firmware 1012 allows remote authenticated users to execute code through PubNub commands. The cmd s_event_var handler copies the s_value JSON field with strcpy into a 244-byte stack buffer without enforcing a length limit. PubNub authentication is required; oversized input overwrites stack data and can redirect execution on the Hub.

The record

CVE
CVE-2017-16336
Published
Jan 11, 2023
Updated
Apr 8, 2025
Vendor
Insteon
Product
Insteon Hub
Classifications
CWE-121, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=Not specified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Insteon · Insteon Hubversion=Not specified

Published CVSS scores

9.9NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.5TalosCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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