CVE-2023-20988

Local information disclosure via unchecked RSSI bounds

Published Mar 24, 2023 · Updated Feb 25, 2025

Out-of-bounds read in Android 13 Bluetooth allows attackers with System privileges to disclose Bluetooth server memory. The btm_read_rssi_complete function in btm_acl.cc handles a received RSSI completion event without checking its bounds before reading it. Exploitation requires System-level execution and Bluetooth adjacency, needs no user interaction, and affects confidentiality without reported integrity or availability impact.

CVSS severity4.5
Medium
EPSS probability0.14%
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 Android 13 Bluetooth allows attackers with System privileges to disclose Bluetooth server memory. The btm_read_rssi_complete function in btm_acl.cc handles a received RSSI completion event without checking its bounds before reading it. Exploitation requires System-level execution and Bluetooth adjacency, needs no user interaction, and affects confidentiality without reported integrity or availability impact.

The record

CVE
CVE-2023-20988
Published
Mar 24, 2023
Updated
Feb 25, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-125, T1005
Attack vector
adjacent
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?

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  1. Affected versionversion=Android-13

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Google Cloud · Androidversion=Android-13

Published CVSS scores

4.5CISA-ADPCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.5NIST NVDCVSS:3.1/AV:A/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

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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