CVE-2023-20984

Local information disclosure via unchecked Bluetooth event

Published Mar 24, 2023 · Updated Feb 25, 2025

An out-of-bounds read in Android 13's Bluetooth System component allows local users with System privileges to disclose process memory. ParseBqrLinkQualityEvt in btif_bqr.cc reads fields from a Bluetooth link-quality event without checking that the input buffer is long enough. Exploitation requires System execution privileges, needs no user interaction, and is limited to information disclosure from the Bluetooth process context.

CVSS severity4.4
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in Android 13's Bluetooth System component allows local users with System privileges to disclose process memory. ParseBqrLinkQualityEvt in btif_bqr.cc reads fields from a Bluetooth link-quality event without checking that the input buffer is long enough. Exploitation requires System execution privileges, needs no user interaction, and is limited to information disclosure from the Bluetooth process context.

The record

CVE
CVE-2023-20984
Published
Mar 24, 2023
Updated
Feb 25, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-125
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Android-13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google Cloud · Androidversion=Android-13

Published CVSS scores

4.4NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

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)
Vectorlocal
Privilegesadmin
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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