CVE-2023-21197Network attack vector

Remote information disclosure via Bluetooth bounds check

Published Jun 28, 2023 · Updated Dec 4, 2024

Out-of-bounds read in Android 13 Bluetooth ACL processing allows remote attackers to disclose process memory through a crafted packet. The btm_acl_process_sca_cmpl_pkt function in btm_acl.cc applies an incorrect bounds check before reading packet data, permitting a read beyond the valid buffer. Exploitation requires Bluetooth reachability but no authentication or user interaction, and the reported consequence is limited to information disclosure.

CVSS severity7.5
High
EPSS probability0.44%
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 ACL processing allows remote attackers to disclose process memory through a crafted packet. The btm_acl_process_sca_cmpl_pkt function in btm_acl.cc applies an incorrect bounds check before reading packet data, permitting a read beyond the valid buffer. Exploitation requires Bluetooth reachability but no authentication or user interaction, and the reported consequence is limited to information disclosure.

The record

CVE
CVE-2023-21197
Published
Jun 28, 2023
Updated
Dec 4, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 4, 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?

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

  1. Affected versionversion=Android-13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-13

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
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.

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Technologies

Your stack

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Your stack

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