CVE-2026-37555

An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec

High · published April 29, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
42.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00504 · 42.2th percentile
Published
2026-04-29T00:00Z
EPSS history
Timeline
  • 29 APR 00:00Z
    An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec
    cvelistv5