PoC Index

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.

CVSS v3.1
7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CVSS v2.0
5.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:P
EPSS
1.75% chance of exploitation in the next 30 days, 76th percentile
Published
2022-03-23
Updated
2025-12-11

Proof-of-concept exploits (1)

References

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