CVE-2021-38291

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

2.69% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 85.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2021-08-12 00:00Z5 YR AGO

Last updated

2024-08-04 01:37Z2 YR AGO

Reserved

2021-08-09

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-617Reachable AssertionBase

Data version

5.1

Document digest

d051f4ad2918e5a413e1c4a3e94279b7ac3b96f646cf9ce2284d59bb40e76b34

• trac.ffmpeg.orghttps://trac.ffmpeg.org/ticket/9312
• www.debian.orgDSA-4990https://www.debian.org/security/2021/dsa-4990vendor-advisory
• www.debian.orgDSA-4998https://www.debian.org/security/2021/dsa-4998vendor-advisory
• lists.debian.org[debian-lts-announce] 20211114 [SECURITY] [DLA 2818-1] ffmpeg security updatehttps://lists.debian.org/debian-lts-announce/2021/11/msg00012.htmlmailing-list
• security.gentoo.orgGLSA-202312-14https://security.gentoo.org/glsa/202312-14vendor-advisory