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MEDIUM

CVE-2025-5283

libvpx: Double-free in libvpx encoder

CVSS v3

5.4

MEDIUM

EPSS Score

0.6 %

exploit probability, as of 2026-10-19

CISA KEV

No

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:10all versions · fixed in 1.14.1-3.el10_0and 1 other package
  • libvpxAlmaLinux:9all versions · fixed in 1.9.0-9.el9_6and 1 other package
  • libvpxAlmaLinux:8all versions · fixed in 1.7.0-12.el8_10and 1 other package

Vendor advisories

  • CVE-2025-5283 Red Hat Product Security551 products fixed · 6 known affected

    libvpx: Double-free in libvpx encoder

    rhel10/firefox-flatpak.src as a component of Red Hat Enterprise Linux 10 · rhel10/thunderbird-flatpak.src as a component of Red Hat Enterprise Linux 10 · libvpx as a component of Red Hat Enterprise Linux 6

  • RHSA-2025:9331 Red Hat Product Security25 products fixed

    Red Hat Security Advisory: libvpx security update

  • RHSA-2025:9155 Red Hat Product Security21 products fixed

    Red Hat Security Advisory: firefox security update

  • RHSA-2025:9122 Red Hat Product Security41 products fixed

    Red Hat Security Advisory: libvpx security update

  • RHSA-2025:9126 Red Hat Product Security39 products fixed

    Red Hat Security Advisory: libvpx security update

  • RHSA-2025:9124 Red Hat Product Security21 products fixed

    Red Hat Security Advisory: libvpx security update

27 more advisories

Full record on NVD

Description

Use after free in libvpx in Google Chrome prior to 137.0.7151.55 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Published
2025-05-27
Last Modified
2025-11-03

Frequently asked questions

What is CVE-2025-5283?

Use after free in libvpx in Google Chrome prior to 137.0.7151.55 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)

Is CVE-2025-5283 actively exploited?

Active exploitation of CVE-2025-5283 has not been confirmed. Its EPSS score was 0.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-5283?

CVE-2025-5283 has a CVSS v3 base score of 5.4 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

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