CVE-2019-19192Public exploit

Adjacent denial of service via sequential ATT requests

Published Feb 12, 2020 · Updated Aug 5, 2024

Denial of service in STMicroelectronics BLE Stack through 1.3.1 allows physically proximate attackers to hang or restart STM32WB5x devices. The WB55 BLE coprocessor fails to clear event flags when two consecutive ATT requests arrive before the first response completes. A rogue BLE central must be in radio range; without a watchdog the application deadlocks, while a watchdog converts the fault into a device restart.

CVSS severity6.5
Medium
EPSS probability1.04%
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 STMicroelectronics BLE Stack through 1.3.1 allows physically proximate attackers to hang or restart STM32WB5x devices. The WB55 BLE coprocessor fails to clear event flags when two consecutive ATT requests arrive before the first response completes. A rogue BLE central must be in radio range; without a watchdog the application deadlocks, while a watchdog converts the fault into a device restart.

The record

CVE
CVE-2019-19192
Published
Feb 12, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, 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

6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.3NIST National Vulnerability DatabaseAV:A/AC:L/Au:N/C:N/I:N/A:P

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-20Improper Input Validation
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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