HIGH

CVE-2023-6349

Heap overflow in libvpx

CVSS v3

7.5

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

none

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

libvpxAlmaLinux:8all versions · fixed in 1.7.0-11.el8_10and 1 other package

Vendor advisories

CVE-2023-6349 Red Hat Product Security54 products fixed · 15 known affected
libvpx: Heap buffer overflow related to VP9 encoding
libvpx as a component of Red Hat Enterprise Linux 6 · libvpx-devel as a component of Red Hat Enterprise Linux 6 · libvpx-utils as a component of Red Hat Enterprise Linux 6
RHSA-2026:4128 Red Hat Product Security2 products fixed
Red Hat Security Advisory: Red Hat AI Inference Server Model Optimization Tools 3.2.2 (CUDA)
RHSA-2024:5941 Red Hat Product Security41 products fixed
Red Hat Security Advisory: libvpx security update

Full record on NVD

Description

A heap overflow vulnerability exists in libvpx - Encoding a frame that has larger dimensions than the originally configured size with VP9 may result in a heap overflow in libvpx. We recommend upgrading to version 1.13.1 or above

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2024-05-27
Last Modified: 2025-07-22

Frequently asked questions

What is CVE-2023-6349?

Is CVE-2023-6349 actively exploited?

Active exploitation of CVE-2023-6349 has not been confirmed. Its EPSS score was 0.4% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-6349?

CVE-2023-6349 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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