CVE-2026-29022
CVE-2026-29022 is a high-severity vulnerability in Mackron Dr Libs with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v4: 6.8
- EPSS exploit prediction: 0% (11th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-9315
- Weakness: CWE-787
- Affected product: Mackron Dr Libs
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-29022?
- 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.
- How severe is CVE-2026-29022?
- CVE-2026-29022 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity high, and availability high.
- Is CVE-2026-29022 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-29022?
- CVE-2026-29022 affects Mackron Dr Libs. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-29022?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-29022 have an EU (EUVD) identifier?
- Yes. CVE-2026-29022 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9315.
- When was CVE-2026-29022 published?
- CVE-2026-29022 was published on 2026-03-03 and last updated on 2026-06-17.
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
Affected products (1)
- cpe:2.3:a:mackron:dr_libs:*:*:*:*:*:*:*:*
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