CVE-2021-3246

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 87.4% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-07-20 00:00Z5 YR AGO

Last updated

2024-08-03 16:53Z2 YR AGO

Reserved

2021-01-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

46a5924f85214132a173a0897fb0ec3f69e97446a78cfe3c3192498e4aaf54ff

• github.comhttps://github.com/libsndfile/libsndfile/issues/687
• lists.debian.org[debian-lts-announce] 20210729 [SECURITY] [DLA 2722-1] libsndfile security updatehttps://lists.debian.org/debian-lts-announce/2021/07/msg00024.htmlmailing-list
• www.debian.orgDSA-4947https://www.debian.org/security/2021/dsa-4947vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-8fef82e363https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7LNW4AVDVL3BU3N3KGVFLTYFASBVCIF/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-e2dc109b4chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLUDCEMMPRA3IYYYHVZUOUZXI65FU37V/vendor-advisory
• security.gentoo.orgGLSA-202309-11https://security.gentoo.org/glsa/202309-11vendor-advisory