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CVE Record

CVE-2020-22028: Buffer Overflow vulnerability exists in FFmpeg 4.2 in filter_vertically_8 at libavfilter/vf_avgblur.c, whic...

Buffer Overflow vulnerability exists in FFmpeg 4.2 in filter_vertically_8 at libavfilter/vf_avgblur.c, which could cause a remote Denial of Service.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This CVE is a buffer overflow in FFmpeg 4.2 that can make a vulnerable media-processing service crash. The reported impact is remote denial of service, not confirmed data theft or code execution. Business urgency depends on whether FFmpeg processes untrusted media uploads, streams, or files in production workflows.

Executive priority

Handle as a focused availability remediation. It is not supported as actively exploited or critical in the provided sources, but internet-facing or customer-upload media workflows should be patched promptly because crashes can disrupt service.

Technical view

The issue is reported in FFmpeg 4.2 within filter_vertically_8 in libavfilter/vf_avgblur.c. The CVE description ties it to a buffer overflow and remote denial of service. Debian published FFmpeg security updates, but the provided sources do not include CVSS, CWE, detailed affected package ranges, or exploit mechanics.

Likely exposure

Most likely exposed systems run FFmpeg 4.2 or affected distro FFmpeg packages and process untrusted media. Higher concern applies to web upload pipelines, transcoding services, media APIs, or automation that invokes FFmpeg filters. Evidence for affected products beyond FFmpeg and Debian-packaged FFmpeg is incomplete in the supplied bundle.

Exploitation context

The sources support remote denial-of-service risk. They do not show CISA KEV listing, active exploitation, public exploit availability, or reliable evidence of code execution. Treat this primarily as an availability risk unless vendor guidance provides stronger impact details.

Researcher notes

The public record is sparse: no CVSS, CWE, exploit status, or complete affected-version matrix is provided. The strongest technical anchor is the FFmpeg vf_avgblur.c function reference, with Debian advisories confirming downstream security updates. Avoid expanding impact beyond remote denial of service without additional vendor evidence.

Mitigation direction

  • Apply Debian FFmpeg security updates where Debian packages are used.
  • For non-Debian systems, check FFmpeg or OS vendor advisories for fixed packages.
  • Prioritize services that process untrusted uploads, streams, or third-party media.
  • Limit untrusted media processing exposure until vulnerable FFmpeg builds are updated.
  • Monitor media-processing services for crashes or repeated abnormal FFmpeg failures.

Validation and detection

  • Inventory FFmpeg versions used by hosts, containers, and application images.
  • Check whether production workflows process untrusted media through FFmpeg.
  • Map vulnerable services to Debian DLA 2742-1 or DSA-4990 applicability.
  • Confirm patched package versions through the responsible OS or FFmpeg vendor.
  • Review incident logs for unexplained media-processing crashes around untrusted inputs.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2020-22028 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.