CVE-2020-20891 - Vulnerability Details - OpenCVE

Description

Buffer Overflow vulnerability in function config_input in libavfilter/vf_gblur.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts.

Published: 2021-09-20

Score: 8.8 High

EPSS: 1.2% Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2020-13671	Buffer Overflow vulnerability in function config_input in libavfilter/vf_gblur.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.01234.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/64a805883d7223c868a683f0030837d859edd2ab
https://trac.ffmpeg.org/ticket/8282

History

Sat, 12 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.0045}`	epss `{'score': 0.0061}`

Subscriptions

Ffmpeg Ffmpeg

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-09-20T15:19:20.000Z

Updated: 2024-08-04T14:22:25.363Z

Reserved: 2020-08-13T00:00:00.000Z

Link: CVE-2020-20891

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-09-20T16:15:08.893

Modified: 2026-06-17T03:03:26.050

Link: CVE-2020-20891

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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