CVE-2019-17520Public exploit

BLE peripheral crash via premature public key

Published Feb 10, 2020 · Updated Aug 5, 2024

Denial of service in Texas Instruments SimpleLink CC2640R2 SDK 3.30.00.20 and earlier allows physically proximate attackers to crash BLE peripherals. The SMP implementation accepts a Public Key packet during legacy pairing before pairing begins, then copies the key to a null target address and triggers a hard fault. Attackers need only be in Bluetooth radio range; affected products can restart or remain deadlocked until manually restarted.

CVSS severity6.5
Medium
EPSS probability1.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Texas Instruments SimpleLink CC2640R2 SDK 3.30.00.20 and earlier allows physically proximate attackers to crash BLE peripherals. The SMP implementation accepts a Public Key packet during legacy pairing before pairing begins, then copies the key to a null target address and triggers a hard fault. Attackers need only be in Bluetooth radio range; affected products can restart or remain deadlocked until manually restarted.

The record

CVE
CVE-2019-17520
Published
Feb 10, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

6.1NIST NVDAV:A/AC:L/Au:N/C:N/I:N/A:C
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499Endpoint 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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