CVE-2019-16336Public exploit

Device crash via BLE length overflow

Published Feb 12, 2020 · Updated Aug 5, 2024

Buffer overflow in Cypress PSoC 4 BLE component 3.61 and earlier allows physically proximate attackers to crash BLE peripherals. The BLE Link Layer processes data-channel frames whose declared payload exceeds the configured maximum receive size, overflowing memory instead of rejecting them. Radio-range access as a BLE central is sufficient; the demonstrated result is a peripheral hard fault and restart, with no confirmed data compromise.

CVSS severity6.5
Medium
EPSS probability1.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Cypress PSoC 4 BLE component 3.61 and earlier allows physically proximate attackers to crash BLE peripherals. The BLE Link Layer processes data-channel frames whose declared payload exceeds the configured maximum receive size, overflowing memory instead of rejecting them. Radio-range access as a BLE central is sufficient; the demonstrated result is a peripheral hard fault and restart, with no confirmed data compromise.

The record

CVE
CVE-2019-16336
Published
Feb 12, 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 12, 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

3.3NIST NVDAV:A/AC:L/Au:N/C:N/I:N/A:P
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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