CVE-2026-37555
Libsndfile IMA ADPCM Integer Overflow Denial of Service
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.
INFO
Published Date :
April 29, 2026, 4:16 p.m.
Last Modified :
May 1, 2026, 6:37 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update libsndfile to the latest version.
- Apply patches for WAV and close paths.
- Validate integer overflow handling in file processing.
- Review all integer type conversions carefully.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-37555.
| URL | Resource |
|---|---|
| https://gist.github.com/sgInnora/a5f5c19e4bf6f4fb74fab7b0ef2bfcc1 | Exploit Third Party Advisory |
| https://github.com/libsndfile/libsndfile/commit/9a829113c88a51e57c1e46473e90609e4b7df151 | Patch |
| https://github.com/libsndfile/libsndfile/issues/833 | Issue Tracking |
| https://github.com/libsndfile/libsndfile/issues/833 | Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-37555 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-37555
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-37555 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-37555 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 01, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:libsndfile_project:libsndfile:1.2.2:*:*:*:*:*:*:* Added Reference Type MITRE: https://gist.github.com/sgInnora/a5f5c19e4bf6f4fb74fab7b0ef2bfcc1 Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://github.com/libsndfile/libsndfile/commit/9a829113c88a51e57c1e46473e90609e4b7df151 Types: Patch Added Reference Type CISA-ADP: https://github.com/libsndfile/libsndfile/issues/833 Types: Issue Tracking Added Reference Type MITRE: https://github.com/libsndfile/libsndfile/issues/833 Types: Issue Tracking -
CVE Modified by [email protected]
Apr. 30, 2026
Action Type Old Value New Value Added Reference https://gist.github.com/sgInnora/a5f5c19e4bf6f4fb74fab7b0ef2bfcc1 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-190 Added Reference https://github.com/libsndfile/libsndfile/issues/833 -
New CVE Received by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Added 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. Added Reference https://github.com/libsndfile/libsndfile/commit/9a829113c88a51e57c1e46473e90609e4b7df151 Added Reference https://github.com/libsndfile/libsndfile/issues/833