CVE-2023-21195

Information disclosure via Bluetooth event bounds check

Published Jun 28, 2023 · Updated Aug 2, 2024

Out-of-bounds read in Android 13 Bluetooth allows attackers to disclose local memory through malformed periodic-advertising sync data. The btm_ble_periodic_adv_sync_tx_rcvd function in btm_ble_gap.cc inadequately validates the event length before parsing its fixed sequence of fields. Exploitation requires compromised Bluetooth firmware running with System privileges; no user interaction is required, and the reported consequence is disclosure only.

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 to disclose local memory through malformed periodic-advertising sync data. The btm_ble_periodic_adv_sync_tx_rcvd function in btm_ble_gap.cc inadequately validates the event length before parsing its fixed sequence of fields. Exploitation requires compromised Bluetooth firmware running with System privileges; no user interaction is required, and the reported consequence is disclosure only.

The record

CVE
CVE-2023-21195
Published
Jun 28, 2023
Updated
Aug 2, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-125
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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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

4.5NIST 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

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
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.

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Technologies

Your stack

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Your stack

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