CVE-2020-0103Network attack vector

Remote code execution via incorrect AAC buffer deallocation

Published May 14, 2020 · Updated Aug 4, 2024

Invalid free in Android 9 and 10 allows remote attackers to execute code in a privileged process via a crafted Bluetooth AAC transmission. The a2dp_aac_decoder_cleanup function passes buffers allocated by osi_malloc to free rather than the required osi_free routine for canary-protected allocations. No authentication or user interaction is required; successful delivery corrupts decoder memory and grants code execution in the Bluetooth service's privileged context.

CVSS severity9.8
Critical
EPSS probability1.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid free in Android 9 and 10 allows remote attackers to execute code in a privileged process via a crafted Bluetooth AAC transmission. The a2dp_aac_decoder_cleanup function passes buffers allocated by osi_malloc to free rather than the required osi_free routine for canary-protected allocations. No authentication or user interaction is required; successful delivery corrupts decoder memory and grants code execution in the Bluetooth service's privileged context.

The record

CVE
CVE-2020-0103
Published
May 14, 2020
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-763, CWE-787, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 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?

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

  1. Affected versionversion=Android-10 Android-9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-10 Android-9

Published CVSS scores

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-763Release of Invalid Pointer or Reference
CWE-787Out-of-bounds Write
T1210Exploitation of Remote Services

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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