# CVE-2026-37555

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## Description

An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with (sf_count_t) cast, but the WAV code path (line 235) and close path (line 167) were not. When samplesperblock (int) * blocks (int) exceeds INT_MAX, the 32-bit multiplication overflows before being assigned to sf.frames (sf_count_t/int64). With samplesperblock=50000 and blocks=50000, the product 2500000000 overflows to -1794967296. This causes incorrect frame count leading to heap buffer overflow or denial of service. Both values come from the WAV file header and are attacker-controlled. This issue was discovered after an incomplete fix for CVE-2022-33065.

## Key facts

- **CVE ID:** CVE-2026-37555
- **Published:** 2026-04-29
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** CWE-190

## Affected products

- `libsndfile_project:libsndfile`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-37555

## Citation

> AI Analytics. CVE-2026-37555. Retrieved 2026-07-15 from https://api.ai-analytics.org/cve/CVE-2026-37555. Derived from NIST NVD. Licensed CC0.

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