How severe is CVE-2020-22056?

CVE-2020-22056 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-22056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-22056?

CVE-2020-22056 affects Ffmpeg. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-22056?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-22056 published?

CVE-2020-22056 was published on 2021-06-02 and last updated on 2026-06-17.

CVE-2020-22056

CVE-2020-22056 is a medium-severity vulnerability in Ffmpeg with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Ffmpeg
Published: 2021-06-02
Last modified: 2026-06-17

Description

A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the config_input function in af_acrossover.c.

Frequently asked questions

What is CVE-2020-22056?: A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the config_input function in af_acrossover.c.
How severe is CVE-2020-22056?: CVE-2020-22056 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-22056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-22056?: CVE-2020-22056 affects Ffmpeg. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-22056?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-22056 published?: CVE-2020-22056 was published on 2021-06-02 and last updated on 2026-06-17.

References

https://trac.ffmpeg.org/ticket/8304

Affected products (1)

cpe:2.3:a:ffmpeg:ffmpeg:4.2:-:*:*:*:*:*:*

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