CVE-2023-6349: A heap overflow vulnerability exists in libvpx - Encoding a frame that has larger dimensions than the original

Q: How do I fix CVE-2023-6349?

libvpx: upgrade to 1.13.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-6349 being exploited?

CVE-2023-6349 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-6349 affect?

CVE-2023-6349 affects libvpx. Severity is high (CVSS 7.5). 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

Q: How urgent is CVE-2023-6349?

Priority 44/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-6349 is a high-severity flaw (CVSS 7.5) affecting libvpx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-122, CWE-787
Published	2024-05-27
Last modified	2026-06-17

Publisher (CNA): Google Inc. · Vendor: webmproject

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-27 12:15 UTCPublished CVE record published
2026-06-17 06:50 UTCUpdated Record last modified

webmproject libvpx UPGRADE

Affected: < 1.13.1

Fixed in: 1.13.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libvpx || rpm -q libvpx || libvpx --version

2. UPGRADE to 1.13.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libvpx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libvpx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-6349?

libvpx: upgrade to 1.13.1. Exact commands for each OS are on this page.

Is CVE-2023-6349 being exploited?

CVE-2023-6349 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-6349 affect?

CVE-2023-6349 affects libvpx. Severity is high (CVSS 7.5). 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

How urgent is CVE-2023-6349?

Priority 44/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-5197 CRITICAL 9.1 UPGRADE MITIGATE There exists interger overflows in libvpx in versions prior to 1.14.1. Calling vpx_img_alloc() with a large va
CVE-2023-44488 HIGH 7.5 UPGRADE MITIGATE VP9 in libvpx before 1.13.1 mishandles widths, leading to a crash related to encoding.

References

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