What is CVE-2019-16349?

CVE-2019-16349 is a medium-severity vulnerability in Axiosys Bento4, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-09-16.

How severe is CVE-2019-16349?

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

Is CVE-2019-16349 known to be exploited?

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

NULL pointer dereference in Axiosys Bento4

CVE-2019-16349

Bento4 1.5.1-628 has a NULL pointer dereference in AP4_ByteStream::ReadUI32 in Core/Ap4ByteStream.cpp when called from the AP4_TrunAtom class.

Published 2019-09-16 · 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: 0.009 (56.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Axiosys Bento4 — versions 1.5.1-628

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

Marsman1996/pocs

References

github.com/axiomatic-systems/Bento4/issues/422 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-16349?: CVE-2019-16349 is a medium-severity vulnerability in Axiosys Bento4, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-09-16.
How severe is CVE-2019-16349?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2019-16349 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.