{"cve":"CVE-2021-40426","nvd":{"published":"2022-04-14T20:15:09.110","modified":"2026-06-17T04:06:54.807","status":"Modified","description":"A heap-based buffer overflow vulnerability exists in the sphere.c start_read() functionality of Sound Exchange libsox 14.4.2 and master commit 42b3557e. A specially-crafted file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-122","CWE-787"],"references":["http://www.openwall.com/lists/oss-security/2023/02/03/3","https://lists.debian.org/debian-lts-announce/2023/02/msg00009.html","https://talosintelligence.com/vulnerability_reports/TALOS-2021-1434","https://www.debian.org/security/2023/dsa-5356","http://www.openwall.com/lists/oss-security/2023/02/03/3"],"products":["sound_exchange_project:sound_exchange"],"source":"nvd","synced_at":"2026-10-19T21:30:03.577988018+00:00"},"epss":{"cve":"CVE-2021-40426","score":0.02052,"percentile":0.81259,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}