CVE-2020-0056

Local information disclosure via unchecked HCI event

Published Mar 10, 2020 · Updated Aug 4, 2024

Out-of-bounds read in Android 10's Bluetooth HCI handler allows local users to disclose process memory without user interaction. btu_hcif_connection_comp_evt in btu_hcif.cc parses a connection-complete event without first verifying that the event contains the required bytes. A low-privileged local process can trigger the read; the documented impact is information disclosure only, not code execution or data modification.

CVSS severity5.5
Medium
EPSS probability0.16%
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 10's Bluetooth HCI handler allows local users to disclose process memory without user interaction. btu_hcif_connection_comp_evt in btu_hcif.cc parses a connection-complete event without first verifying that the event contains the required bytes. A low-privileged local process can trigger the read; the documented impact is information disclosure only, not code execution or data modification.

The record

CVE
CVE-2020-0056
Published
Mar 10, 2020
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 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?

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  1. Affected versionversion=Android-10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=Android-10

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
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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