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No exploitation reportedFix available

CVE-2021-3246

No exploitation reported by the sources we read.

  • Published2021-07-20
  • WeaknessCWE-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 heap buffer overflow vulnerability in msadpcm_decode_block of libsndfile 1.0.30 allows attackers to execute arbitrary code via a crafted WAV file.

Timeline

dates in UTC
  1. 2021-07-2015:15CVE publishedNVD

Versions per branch

NVD
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published
10.0= 10.0no fix published
Fedoraproject fedora
BranchAffectedFixed in
33.x= 33no fix published
34.x= 34no fix published
Libsndfile project libsndfile
BranchAffectedFixed in
1.0= 1.0.30no 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

  • libsndfileUbuntu:Pro:16.04:LTSall versions · fixed in 1.0.25-10ubuntu0.16.04.3+esm1
  • libsndfileUbuntu:Pro:14.04:LTSall versions · fixed in 1.0.25-7ubuntu2.2+esm2
  • libsndfileUbuntu:20.04:LTSall versions · fixed in 1.0.28-7ubuntu0.1
  • libsndfileUbuntu:18.04:LTSall versions · fixed in 1.0.28-4ubuntu0.18.04.2
  • libsndfileSUSE:OpenStack Cloud Crowbar 9all versions · fixed in 1.0.25-36.23.1
  • libsndfileSUSE:OpenStack Cloud 9all versions · fixed in 1.0.25-36.23.1
  • libsndfileSUSE:OpenStack Cloud 8all versions · fixed in 1.0.25-36.23.1
  • libsndfileSUSE:Manager Server 4.0all versions · fixed in 1.0.28-5.12.1

50 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-3246 Red Hat Product Security338 products fixed · 3 known affected

    libsndfile: Heap buffer overflow via crafted WAV file allows arbitrary code execution

    libsndfile as a component of Red Hat Enterprise Linux 6 · libsndfile-devel as a component of Red Hat Enterprise Linux 6 · libsndfile.src as a component of Red Hat Enterprise Linux 6

  • RHSA-2021:3295 Red Hat Product Security58 products fixed

    Red Hat Security Advisory: libsndfile security update

  • RHSA-2021:3298 Red Hat Product Security41 products fixed

    Red Hat Security Advisory: libsndfile security update

  • RHSA-2021:3297 Red Hat Product Security41 products fixed

    Red Hat Security Advisory: libsndfile security update

  • RHSA-2021:3253 Red Hat Product Security41 products fixed

    Red Hat Security Advisory: libsndfile security update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2021:3295 · 58 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  2. No fix planned, says the vendor Red Hat Product Security CVE-2021-3246 · 3 productsOut of support scope

Advisories and patches

Detection

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

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2021-07-20
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-p3g4-4phf-g392

Frequently asked questions

What is CVE-2021-3246?

A heap buffer overflow vulnerability in msadpcm_decode_block of libsndfile 1.0.30 allows attackers to execute arbitrary code via a crafted WAV file.

Is CVE-2021-3246 actively exploited?

Active exploitation of CVE-2021-3246 has not been confirmed. Its EPSS score was 3.1% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-3246?

CVE-2021-3246 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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