What is CVE-2022-40884?

CVE-2022-40884 is a medium-severity vulnerability in Axiosys Bento4, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2022-10-19.

How severe is CVE-2022-40884?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2022-40884 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Axiosys Bento4

CVE-2022-40884

Bento4 1.6.0 has memory leaks via the mp4fragment.

Published 2022-10-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (19.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Axiosys Bento4 — versions 1.6.0

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

Public proof-of-concept exploits

References

github.com/axiomatic-systems/Bento4/issues/759 (Third Party Advisory)
github.com/yangfar/CVE/blob/main/CVE-2022-40884.md (Third Party Advisory)

Frequently asked questions

What is CVE-2022-40884?: CVE-2022-40884 is a medium-severity vulnerability in Axiosys Bento4, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2022-10-19.
How severe is CVE-2022-40884?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2022-40884 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.