How severe is CVE-2023-52339?

CVE-2023-52339 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-2023-52339 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52339?

CVE-2023-52339 affects Matroska Libebml. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52339?

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

Does CVE-2023-52339 have an EU (EUVD) identifier?

Yes. CVE-2023-52339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56996.

When was CVE-2023-52339 published?

CVE-2023-52339 was published on 2024-01-12 and last updated on 2026-06-17.

CVE-2023-52339

CVE-2023-52339 is a medium-severity vulnerability in Matroska Libebml 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-190.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56996
Weakness: CWE-190
Affected product: Matroska Libebml
Published: 2024-01-12
Last modified: 2026-06-17

Description

In libebml before 1.4.5, an integer overflow in MemIOCallback.cpp can occur when reading or writing. It may result in buffer overflows.

Frequently asked questions

What is CVE-2023-52339?: In libebml before 1.4.5, an integer overflow in MemIOCallback.cpp can occur when reading or writing. It may result in buffer overflows.
How severe is CVE-2023-52339?: CVE-2023-52339 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-2023-52339 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52339?: CVE-2023-52339 affects Matroska Libebml. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52339?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-52339 have an EU (EUVD) identifier?: Yes. CVE-2023-52339 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56996.
When was CVE-2023-52339 published?: CVE-2023-52339 was published on 2024-01-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:matroska:libebml:*:*:*:*:*:*:*:*

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