CVE-2019-20549

Heap out-of-bounds read via Bluetooth LE packets

Published Mar 24, 2020 · Updated Aug 5, 2024

Out-of-bounds read in Broadcom Bluetooth on Samsung Android 7.x through 9.0 devices allows attackers to access heap memory via LE packets. The LE packet receive path performs an out-of-bounds heap read during packet processing; Samsung has not published the responsible function or field. The affected device must use a Broadcom chipset and have Bluetooth LE reception exposed; public records do not establish code execution or service interruption.

CVSS severity9.8
Critical
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Broadcom Bluetooth on Samsung Android 7.x through 9.0 devices allows attackers to access heap memory via LE packets. The LE packet receive path performs an out-of-bounds heap read during packet processing; Samsung has not published the responsible function or field. The affected device must use a Broadcom chipset and have Bluetooth LE reception exposed; public records do not establish code execution or service interruption.

The record

CVE
CVE-2019-20549
Published
Mar 24, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 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

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

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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