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Vulnerability details: VCID-kgyh-uv25-6fhp
Vulnerability ID VCID-kgyh-uv25-6fhp
Aliases CVE-2020-22020
Summary Buffer Overflow vulnerability in FFmpeg 4.2 in the build_diff_map function in libavfilter/vf_fieldmatch.c, which could let a remote malicious user cause a Denial of Service.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
Reference id Reference type URL
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=ce5274c1385d55892a692998923802023526b765
https://api.first.org/data/v1/epss?cve=CVE-2020-22020
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20445
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20446
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20453
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21041
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22015
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22016
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22017
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22019
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22020
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22021
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22022
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22023
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22025
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22026
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22027
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22028
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22029
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22030
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22031
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22032
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22033
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22034
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22035
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22036
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22037
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22049
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22054
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35965
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38114
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38171
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38291
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
https://trac.ffmpeg.org/ticket/8239
https://www.debian.org/security/2021/dsa-4990
cpe:2.3:a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2020-22020 https://nvd.nist.gov/vuln/detail/CVE-2020-22020
USN-5472-1 https://usn.ubuntu.com/5472-1/
USN-USN-5167-1 https://usn.ubuntu.com/USN-5167-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-22020
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-22020
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Exploit Prediction Scoring System (EPSS)
Percentile 0.84235
EPSS Score 0.02345
Published At Aug. 7, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:39:35.055388+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/5472-1/ 37.0.0