What is CVE-2023-33717?

CVE-2023-33717 is a medium-severity vulnerability in Mp4v2 Project, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2023-06-02.

How severe is CVE-2023-33717?

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

Vulnerability in Mp4v2 Project

CVE-2023-33717

mp4v2 v2.1.3 was discovered to contain a memory leak when a method calling MP4File::ReadBytes() had allocated memory but did not catch exceptions thrown by ReadBytes()

Published 2023-06-02 · 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 (18.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.4% 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

Mp4v2 Project — versions 2.1.3

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

github.com/enzo1982/mp4v2/issues/37 (Exploit, Issue Tracking)
github.com/enzo1982/mp4v2/ (Product)

Frequently asked questions

What is CVE-2023-33717?: CVE-2023-33717 is a medium-severity vulnerability in Mp4v2 Project, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2023-06-02.
How severe is CVE-2023-33717?: Medium severity. CVSS v3 base score is 5.5 out of 10.