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CVE-2020-20446

22
FAUCET Score

CVE-2020-20446 is a Divide By Zero vulnerability in FFmpeg 4.2, specifically within the libavcodec/aacpsy.c component, affecting Debian Linux and FFmpeg installations. This vulnerability carries a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low attack complexity, leading to a high impact Denial of Service. There is currently no evidence of active exploitation, and no public exploit code or Metasploit modules are available. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
4.2CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.73%
Probability of exploitation in next 30 days
EPSS Percentile
75.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0173 is in the 88th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.debian.org / debian-lts-announce/2021/11/msg00012.html
Mailing ListThird Party Advisory
trac.ffmpeg.org / ticket/7995
ExploitIssue TrackingVendor Advisory
debian.org / security/2021/dsa-4990
Third Party Advisory
debian.org / security/2021/dsa-4998
Third Party Advisory