What is CVE-2018-20502?

CVE-2018-20502 is a medium-severity vulnerability in Axiosys Bento4, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2018-12-26.

How severe is CVE-2018-20502?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Axiosys Bento4

CVE-2018-20502

An issue was discovered in Bento4 1.5.1-627. There is an attempt at excessive memory allocation in the AP4_DataBuffer class when called from AP4_HvccAtom::Create in Core/Ap4HvccAtom.cpp.

Vulnerability class: DoS (Denial of Service)

Published 2018-12-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.0% 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: 0.011 · change: 0.000

Affected products

Axiosys Bento4 — versions 1.5.1-627

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/axiomatic-systems/Bento4/issues/349 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-20502?: CVE-2018-20502 is a medium-severity vulnerability in Axiosys Bento4, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2018-12-26.
How severe is CVE-2018-20502?: Medium severity. CVSS v3 base score is 6.5 out of 10.