What is CVE-2022-40775?

CVE-2022-40775 is a medium-severity vulnerability in Axiosys Bento4, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-09-18.

How severe is CVE-2022-40775?

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

NULL pointer dereference in Axiosys Bento4

CVE-2022-40775

An issue was discovered in Bento4 through 1.6.0-639. A NULL pointer dereference occurs in AP4_StszAtom::WriteFields.

Published 2022-09-18 · 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 (23.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% 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

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/axiomatic-systems/Bento4/issues/758 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2022-40775?: CVE-2022-40775 is a medium-severity vulnerability in Axiosys Bento4, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-09-18.
How severe is CVE-2022-40775?: Medium severity. CVSS v3 base score is 5.5 out of 10.