CVE-2020-5727Public exploit

Unauthenticated disarm via rogue keypad pairing

Published May 2, 2020 · Updated Aug 4, 2024

Improper authentication in SimpliSafe Base Station (Gen 3) firmware 1.4 allows local, unauthenticated attackers to disarm systems via rogue keypad pairing. The base station accepts a keypad already paired to another system after its physical pairing button is pressed, then permits that keypad to add or change PINs without the victim PIN. Physical access and a second attacker-controlled base station and keypad are required; the resulting impact is unauthorized disarming and integrity loss, not reported data disclosure or service interruption.

CVSS severity4.6
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in SimpliSafe Base Station (Gen 3) firmware 1.4 allows local, unauthenticated attackers to disarm systems via rogue keypad pairing. The base station accepts a keypad already paired to another system after its physical pairing button is pressed, then permits that keypad to add or change PINs without the victim PIN. Physical access and a second attacker-controlled base station and keypad are required; the resulting impact is unauthorized disarming and integrity loss, not reported data disclosure or service interruption.

The record

CVE
CVE-2020-5727
Published
May 2, 2020
Updated
Aug 4, 2024
Vendor
SimpliSafe
Product
SimpliSafe Base Station (Gen 3)
Classifications
CWE-287, T1098
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 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 vectorphysical
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

4.6NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
2.1NVDAV:L/AC:L/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1098Account 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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