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No exploitation reportedFix available

CVE-2021-23159

No exploitation reported by the sources we read.

  • Published2022-08-25
  • WeaknessCWE-120 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was found in SoX, where a heap-buffer-overflow occurs in function lsx_read_w_buf() in formats_i.c file. The vulnerability is exploitable with a crafted file, that could cause an application to crash.

Timeline

dates in UTC
  1. 2022-08-2520:15CVE publishedNVD

Versions per branch

NVD
Sound exchange project sound exchange
BranchAffectedFixed in
14.4= 14.4.2-7no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • soxUbuntu:Pro:16.04:LTSall versions · fixed in 14.4.1-5+deb8u4ubuntu0.1+esm1
  • soxUbuntu:Pro:14.04:LTSall versions · fixed in 14.4.1-3ubuntu1.1+esm2
  • soxUbuntu:22.04:LTSall versions · fixed in 14.4.2+git20190427-2+deb11u1build0.22.04.1
  • soxUbuntu:20.04:LTSall versions · fixed in 14.4.2+git20190427-2+deb11u1build0.20.04.1
  • soxUbuntu:18.04:LTSall versions · fixed in 14.4.2-3ubuntu0.18.04.2
  • soxSUSE:Package Hub 15 SP5all versions · fixed in 14.4.2-bp155.3.3.1
  • soxSUSE:Package Hub 15 SP4all versions · fixed in 14.4.2-bp154.2.3.1
  • soxopenSUSE:Tumbleweedall versions · fixed in 14.4.2-8.1

22 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-23159 Red Hat Product Security5 known affected

    sox: heap based overflow in formats_i.c

    sox as a component of Red Hat Enterprise Linux 5 · sox as a component of Red Hat Enterprise Linux 7 · sox-devel as a component of Red Hat Enterprise Linux 7 · +2 more

Full record on NVD

Fix

  1. No fix available, says the vendor Red Hat Product Security CVE-2021-23159 · 1 productFix deferred
  2. No fix planned, says the vendor Red Hat Product Security CVE-2021-23159 · 4 productsOut of support scope

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.15.5read 2026-10-23
  • CNAweakness (CWE)CWE-120known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score0.5 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
2022-08-25
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-c7w7-5cff-9ccj

Frequently asked questions

What is CVE-2021-23159?

A vulnerability was found in SoX, where a heap-buffer-overflow occurs in function lsx_read_w_buf() in formats_i.c file. The vulnerability is exploitable with a crafted file, that could cause an application to crash.

Is CVE-2021-23159 actively exploited?

Active exploitation of CVE-2021-23159 has not been confirmed. Its EPSS score was 0.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-23159?

CVE-2021-23159 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

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