What is CVE-2021-40941?

CVE-2021-40941 is a high-severity vulnerability in Axiosys Bento4, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-06-27.

How severe is CVE-2021-40941?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Axiosys Bento4

CVE-2021-40941

In Bento4 1.6.0-638, there is an allocator is out of memory in the function AP4_Array<AP4_TrunAtom::Entry>::EnsureCapacity in Ap4Array.h:172, as demonstrated by GPAC. This can cause a denial of service (DOS).

Published 2022-06-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.000

Affected products

Axiosys Bento4 — versions 1.6.0-638

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/axiomatic-systems/Bento4/issues/644 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-40941?: CVE-2021-40941 is a high-severity vulnerability in Axiosys Bento4, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-06-27.
How severe is CVE-2021-40941?: High severity. CVSS v3 base score is 7.5 out of 10.