CVE-2026-22554
MediaInfoLib Channel Splitting Heap Buffer Overflow
Publication date: 2026-05-20
Last updated on: 2026-05-20
Assigner: Talos
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mediaarea | mediainfolib | 26.01 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-122 | A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-22554 is a heap-based buffer overflow vulnerability found in MediaInfoLib version 26.01, specifically in its Channel Splitting functionality. The problem occurs when parsing a specially crafted .riff audio file with a bit depth of 20 bits. During this process, the code incorrectly handles audio data by repeatedly copying the same byte into a buffer without moving the offset, which causes a heap buffer overflow.
This overflow allows an attacker to overwrite heap memory, potentially enabling arbitrary write operations before the program crashes.
How can this vulnerability impact me? :
This vulnerability can have serious impacts as it allows an attacker to execute arbitrary code by exploiting the heap buffer overflow. This means an attacker could potentially take control of the affected system or application, leading to data corruption, unauthorized access, or denial of service.
The vulnerability has a high severity rating with a CVSSv3 score of 7.8, indicating significant risk if exploited.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by identifying the presence of MediaInfoLib version 26.01 or earlier on your system, as the heap-based buffer overflow occurs specifically in this version during the processing of specially crafted .riff files.
To detect exploitation attempts, monitor for unusual crashes or abnormal behavior in applications using MediaInfoLib when processing audio files, especially those with 20-bit depth audio data.
While no specific detection commands are provided, you can use file integrity monitoring or hash checks to identify suspicious .riff files, and network monitoring tools to detect transfer of such crafted files.
What immediate steps should I take to mitigate this vulnerability?
The immediate mitigation step is to apply the vendor patch released on May 12, 2026, which addresses this heap-based buffer overflow vulnerability in MediaInfoLib.
Until the patch is applied, avoid processing untrusted or specially crafted .riff audio files, particularly those with 20-bit depth audio data, to reduce the risk of exploitation.
Additionally, monitor systems for crashes or unusual behavior in applications using MediaInfoLib and restrict access to vulnerable components where possible.