CVE-2026-22554

Code execution via stalled channel-splitting offset

Published May 20, 2026 · Updated May 20, 2026

Heap-based buffer overflow in MediaArea MediaInfoLib 26.01 allows attackers to execute arbitrary code via a crafted RIFF audio file. File_ChannelSplitting::Read_Buffer_Continue fails to advance Buffer_Offset for 20-bit samples and writes through an unchecked output index until heap memory is corrupted. Triggering requires a user or consuming application to process a RIFF stream with more than two channels and a 48 kHz sample rate.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in MediaArea MediaInfoLib 26.01 allows attackers to execute arbitrary code via a crafted RIFF audio file. File_ChannelSplitting::Read_Buffer_Continue fails to advance Buffer_Offset for 20-bit samples and writes through an unchecked output index until heap memory is corrupted. Triggering requires a user or consuming application to process a RIFF stream with more than two channels and a 48 kHz sample rate.

The record

CVE
CVE-2026-22554
Published
May 20, 2026
Updated
May 20, 2026
Vendor
MediaArea
Product
MediaInfoLib
Classifications
CWE-122, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2026CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record 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=26.01

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

MediaArea · MediaInfoLibversion=26.01

Published CVSS scores

7.8Cisco TalosCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious File

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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