CVE-2021-4156 - CVE House
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Status published High CVE-2021-4156

An out-of-bounds read flaw was found in libsndfile's FLAC codec...

Vulnerability Description

An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

libsndfile
Vulnerable Versions:
libsndfile 1.1.0

Timeline

Official Publish: March 23rd, 2022
Last Modified: December 11th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Weaknesses (CWE)