Security readout for executives and security teams
Plain-English summary
CVE-2020-22042 is a denial-of-service issue in FFmpeg 4.2. A memory leak in filter graph parsing could consume resources and disrupt media processing. The public record does not provide a CVSS score or complete affected-product metadata.
Executive priority
Prioritize based on whether FFmpeg handles untrusted media in production. Internet-facing media workflows should be reviewed soon because denial of service can affect availability, but the public data lacks severity scoring and active-exploitation evidence.
Technical view
The CVE describes a memory leak in link_filter_inouts in libavfilter/graphparser.c in FFmpeg 4.2. The stated impact is denial of service. The bundle references an FFmpeg ticket and Debian DSA-4998, but does not include exploit details or full version-range data.
Likely exposure
Exposure is most likely where FFmpeg 4.2 processes user-supplied or externally sourced media/filter inputs. The source bundle lists affected vendor/product as n/a, so confirm exposure through installed package versions and vendor advisories rather than assuming all FFmpeg deployments are affected.
Exploitation context
The supplied sources do not show active exploitation, and the CVE is not marked KEV. Treat this as a resource-exhaustion risk, especially for internet-facing upload, transcoding, preview, or media-analysis services that invoke FFmpeg on untrusted content.
Researcher notes
The strongest source detail is the named function and file: link_filter_inouts in libavfilter/graphparser.c. Affected version data is limited to FFmpeg 4.2 in the description, with no CVSS, CWE, or complete product metadata in the bundle.
Mitigation direction
- Inventory FFmpeg versions across servers, containers, and build images.
- Review and apply FFmpeg or OS vendor security updates.
- For Debian systems, review Debian DSA-4998 guidance.
- Limit resources for media-processing workers handling untrusted files.
- Check vendor advisories for exact fixed versions and package status.
Validation and detection
- Confirm whether deployed FFmpeg reports version 4.2 or related vendor builds.
- Map applications that pass untrusted media into FFmpeg.
- Review package changelogs against Debian DSA-4998 or vendor advisories.
- Monitor media workers for abnormal memory growth or repeated restarts.
- Verify updated packages are present after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2020-22042 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://trac.ffmpeg.org/ticket/8267CVE reference · x_refsource_MISC
- DSA-4998CVE reference · vendor-advisory, x_refsource_DEBIAN
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.