CVE-2019-17094Public exploitNetwork attack vector

Code execution via oversized NVRAM parameter

Published Jan 27, 2020 · Updated Sep 16, 2024

Stack-based buffer overflow in Belkin Wemo Insight Switch firmware 2.00.11396 and earlier allows remote attackers to execute code. GetBelkinParameter retrieves an oversized PowerThreshold value from NVRAM into a stack buffer, overflowing it during process initialization. Any device on the same local network can set the value over unauthenticated UPnP and crash the server; its watchdog restart loads and executes the payload.

CVSS severity8.3
High
EPSS probability0.51%
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 Belkin Wemo Insight Switch firmware 2.00.11396 and earlier allows remote attackers to execute code. GetBelkinParameter retrieves an oversized PowerThreshold value from NVRAM into a stack buffer, overflowing it during process initialization. Any device on the same local network can set the value over unauthenticated UPnP and crash the server; its watchdog restart loads and executes the payload.

The record

CVE
CVE-2019-17094
Published
Jan 27, 2020
Updated
Sep 16, 2024
Vendor
Belkin
Product
Wemo Insight Switch
Classifications
CWE-787, CWE-121, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.00.11396 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Belkin · Wemo Insight Switchversion=2.00.11396 and prior

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
8.3BitdefenderCVSS:3.1/AV:A/AC:H/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1210Exploitation of Remote Services

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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