What is CVE-2020-22219?

CVE-2020-22219 is a high-severity vulnerability in Flac Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2023-08-22.

How severe is CVE-2020-22219?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Flac Project

CVE-2020-22219

Buffer Overflow vulnerability in function bitwriter_grow_ in flac before 1.4.0 allows remote attackers to run arbitrary code via crafted input to the encoder.

Vulnerability class: Buffer Overflow

Published 2023-08-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: -0.000

Affected products

Flac Project

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/xiph/flac/issues/215 (Exploit, Issue Tracking)
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
www.debian.org/security/2023/dsa-5500 (vendor-advisory)
lists.debian.org/debian-lts-announce/2023/09/msg00028.html (mailing-list)

Frequently asked questions

What is CVE-2020-22219?: CVE-2020-22219 is a high-severity vulnerability in Flac Project, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2023-08-22.
How severe is CVE-2020-22219?: High severity. CVSS v3 base score is 7.8 out of 10.