CVE-2022-23747Public exploitNetwork attack vector

Code execution via unchecked ALAC sample count

Published Aug 17, 2022 · Updated Aug 3, 2024

Buffer overflow in Sony Xperia 1, 5, and Pro allows attackers to execute code through a malformed ALAC audio file during playback. The libstagefright_soft_somcalacdec.so decoder trusts the frame's numSamples value and writes decoded data beyond the attacker-sized mMixBufferU output buffer without checking its bounds. Exploitation requires the Sony decoder to be selected for file playback or an unprivileged Android app to invoke the privileged media service, allowing access to stored media and control of audio and video streams.

CVSS severity9.8
Critical
EPSS probability10.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Sony Xperia 1, 5, and Pro allows attackers to execute code through a malformed ALAC audio file during playback. The libstagefright_soft_somcalacdec.so decoder trusts the frame's numSamples value and writes decoded data beyond the attacker-sized mMixBufferU output buffer without checking its bounds. Exploitation requires the Sony decoder to be selected for file playback or an unprivileged Android app to invoke the privileged media service, allowing access to stored media and control of audio and video streams.

The record

CVE
CVE-2022-23747
Published
Aug 17, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

Public exploit references

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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