CVE-2021-40171Public exploit

Alarm traffic suppression via unreported RF jamming

Published Dec 15, 2021 · Updated Aug 4, 2024

RF jamming in the SecuritasHome home alarm system allows physically proximate attackers to block legitimate alarm traffic. The alarm panel's RF communications logic fails to generate an owner notification while interference suppresses legitimate radio messages. The attack requires a transmitter within radio range and interrupts alarm communications without credentials or configuration changes.

CVSS severity5.3
Medium
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

RF jamming in the SecuritasHome home alarm system allows physically proximate attackers to block legitimate alarm traffic. The alarm panel's RF communications logic fails to generate an owner notification while interference suppresses legitimate radio messages. The attack requires a transmitter within radio range and interrupts alarm communications without credentials or configuration changes.

The record

CVE
CVE-2021-40171
Published
Dec 15, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1498
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 15, 2021CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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

T1498Network Denial of Service

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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