How severe is CVE-2023-33720?

CVE-2023-33720 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-33720 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-33720?

CVE-2023-33720 affects Mp4v2 Project Mp4v2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-33720?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-33720 published?

CVE-2023-33720 was published on 2023-05-26 and last updated on 2026-06-17.

CVE-2023-33720

CVE-2023-33720 is a medium-severity vulnerability in Mp4v2 Project Mp4v2 with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Mp4v2 Project Mp4v2
Published: 2023-05-26
Last modified: 2026-06-17

Description

mp4v2 v2.1.2 was discovered to contain a memory leak via the class MP4BytesProperty.

Frequently asked questions

What is CVE-2023-33720?: mp4v2 v2.1.2 was discovered to contain a memory leak via the class MP4BytesProperty.
How severe is CVE-2023-33720?: CVE-2023-33720 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-33720 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-33720?: CVE-2023-33720 affects Mp4v2 Project Mp4v2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-33720?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-33720 published?: CVE-2023-33720 was published on 2023-05-26 and last updated on 2026-06-17.

References

https://github.com/enzo1982/mp4v2/issues/36

Affected products (1)

cpe:2.3:a:mp4v2_project:mp4v2:2.1.2:*:*:*:*:*:*:*

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CVE-2018-7339 — High (CVSS 8.8): The MP4Atom class in mp4atom.cpp in MP4v2 through 2.0.0 mishandles Entry Number validation for the MP4 Table Property,…
CVE-2018-17236 — Medium (CVSS 6.5): The function MP4Free() in mp4property.cpp in libmp4v2 2.1.0 internally calls free() on a invalid pointer, raising a…
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