AUGUST 4, 2026
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Case File

CVE-2021-4156

HIGH · CVSS 7.1 EPSS 1.75% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-03-23 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-4156
Severity
HIGH
CVSS
7.1
EPSS
1.75%

Original NVD 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.