What’s Vulnerable › Vulnerabilities

CVE-2026-29022: mackron / dr_libs dr_wav.h Heap Buffer Overflow via WAV File

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-03 · updated 2026-07-14
• Weakness: CWE-122

Description

dr_libs dr_wav.h version 0.14.4 and earlier (fixed in commit 8a7258c) contain a heap buffer overflow vulnerability in the drwav__read_smpl_to_metadata_obj() function of dr_wav.h that allows memory corruption via crafted WAV files. Attackers can exploit a mismatch between sampleLoopCount validation in pass 1 and unconditional processing in pass 2 to overflow heap allocations with 36 bytes of attacker-controlled data through any drwav_init_*_with_metadata() call on untrusted input.

Affected products

• mackron dr_libs: through 0.14.4

References

• https://github.com/mackron/dr_libs/commit/8a7258cc66b49387ad58cc5b81568982a3560d49
• https://github.com/mackron/dr_libs/issues/296
• https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2026-001-dr-libs-heap-overflow.md
• https://www.vulncheck.com/advisories/mackron-dr-libs-heap-buffer-overflow-via-wav-file

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