CVE-2019-3998Public exploit

Wi-Fi credential overwrite via unauthenticated Bluetooth provisioning

Published Feb 13, 2020 · Updated Aug 4, 2024

Authentication bypass in SimpliSafe Base Station firmware 1.4 allows physically proximate attackers to replace its Wi-Fi credentials. The Bluetooth LE provisioning characteristic accepts unauthenticated JSON values for the SSID, password, and token after the base-station button enables pairing. The attacker must be within Bluetooth range after the button is pressed; changing the credentials redirects the station to an attacker-chosen wireless network.

CVSS severity5.5
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in SimpliSafe Base Station firmware 1.4 allows physically proximate attackers to replace its Wi-Fi credentials. The Bluetooth LE provisioning characteristic accepts unauthenticated JSON values for the SSID, password, and token after the base-station button enables pairing. The attacker must be within Bluetooth range after the button is pressed; changing the credentials redirects the station to an attacker-chosen wireless network.

The record

CVE
CVE-2019-3998
Published
Feb 13, 2020
Updated
Aug 4, 2024
Vendor
SimpliSafe
Product
SimpliSafe Base Station (Gen 3)
Classifications
CWE-287, T1565.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=1.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

SimpliSafe · SimpliSafe Base Station (Gen 3)version=1.4

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
1.9TenableAV:L/AC:M/Au:N/C:N/I:P/A:N
1.9NIST NVDAV:L/AC:M/Au:N/C:N/I:P/A:N

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1565.001Stored Data Manipulation

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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