CVE-2021-4156
HIGH 7.1EPSS 1.8%
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.
- Affected
- libsndfile
- CVSS v3.1 NVD
- 7.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - CVSS v2.0 NVD
- 5.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:P - EPSS
- 1.75% chance of exploitation in the next 30 days, 78th percentile
- Published
- 2022-03-23
- Updated
- 2025-12-11
Proof-of-concept exploits (1)
- libsndfile/libsndfile/issues/7311721★ · 2026-09-01
Security advisories
- https://bugzilla.redhat.com/show_bug.cgi?id=2027690
- https://lists.debian.org/debian-lts-announce/2022/06/msg00020.html
- https://lists.debian.org/debian-lts-announce/2022/09/msg00036.html