What’s Vulnerable › Vulnerabilities

CVE-2023-52339

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-01-12 · updated 2026-06-17
• Weakness: CWE-190

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.

Affected products

• Matroska Libebml: before 1.4.5 — fixed in 1.4.5

How to fix

Upgrade to a fixed version: Matroska Libebml 1.4.5. Check the vendor advisory for mitigations.

References

• https://github.com/Matroska-Org/libebml/blob/v1.x/NEWS.md
• https://github.com/Matroska-Org/libebml/compare/release-1.4.4...release-1.4.5
• https://github.com/Matroska-Org/libebml/issues/147
• https://github.com/Matroska-Org/libebml/pull/148
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BJUXVOIRWPP7OFYUKQZDNJTSLWCPIZBH/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNANFT4P6KL4WDQ3TV6QQ44NSC7WKLAB/
• https://github.com/Matroska-Org/libebml/blob/v1.x/NEWS.md
• https://github.com/Matroska-Org/libebml/compare/release-1.4.4...release-1.4.5
• https://github.com/Matroska-Org/libebml/issues/147
• https://github.com/Matroska-Org/libebml/pull/148
• https://lists.debian.org/debian-lts-announce/2025/01/msg00016.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BJUXVOIRWPP7OFYUKQZDNJTSLWCPIZBH/

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