Heap overflow via truncated W64 CUE capacity
Published Aug 5, 2026 · Updated Aug 5, 2026
Heap buffer overflow in dr_wav.h in miniaudio dr_libs allows attackers to corrupt memory by opening a crafted W64 WAV file. The drwav__metadata_process_chunk() capacity estimate truncates a 64-bit W64 chunk size before division, while drwav__read_cue_to_metadata_obj() trusts the full cue-point count and writes beyond the undersized metadata allocation when assertions are disabled. Exploitation requires a 32-bit application to parse attacker-supplied W64 metadata, typically after a user opens the file.
Summary
What happened
Heap buffer overflow in dr_wav.h in miniaudio dr_libs allows attackers to corrupt memory by opening a crafted W64 WAV file. The drwav__metadata_process_chunk() capacity estimate truncates a 64-bit W64 chunk size before division, while drwav__read_cue_to_metadata_obj() trusts the full cue-point count and writes beyond the undersized metadata allocation when assertions are disabled. Exploitation requires a 32-bit application to parse attacker-supplied W64 metadata, typically after a user opens the file.
The record
- CVE
- CVE-2026-71261
- Published
- Aug 5, 2026
- Updated
- Aug 5, 2026
- Vendor
- miniaudio
- Product
- dr_libs
- Classifications
- CWE-190, T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 5, 2026CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
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- Affected versionversion=0 <=*
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What is affected?
Published CVSS scores
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Attacks
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Technologies
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Your stack
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