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Vulnerabilities

Vulnerability · CVE-2023-5217

Google Chromium libvpx Heap Buffer Overflow Vulnerability

Published Sep 25, 2023 · catalog updated Jun 16, 2026 · Google Chromium libvpx

Patch now

CVE-2023-5217 is in the CISA known-exploited catalog, due Oct 23, 2023. Confirm Google Chromium libvpx against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
49.01%
Remediation
Remediation guidance
Affected products
cpe apple/ipados · cpe debian/debian linux · cpe fedoraproject/fedora · cpe google/chrome · cpe microsoft/edge · cpe microsoft/edge chromium

Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apple/ipadosversion unspecified
  • cpe debian/debian linux10.0
  • cpe fedoraproject/fedora37
  • cpe google/chromeversion unspecified
  • cpe microsoft/edge116.0.1938.98
  • cpe microsoft/edge117.0.2045.47
  • cpe microsoft/edge chromium116.0.5845.229
  • cpe microsoft/edge chromium117.0.5938.132
  • cpe mozilla/firefoxversion unspecified
  • cpe webmproject/libvpxversion unspecified
  • vendor Google Chromium libvpxversion unspecified

How to fix CVE-2023-5217

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-5217 is in the CISA known-exploited catalog, due Oct 23, 2023. Confirm Google Chromium libvpx against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0; microsoft/edge chromium 116.0.5845.229; microsoft/edge chromium 117.0.5938.132. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 49.01%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 28, 2023 · Catalog

    Detected

    Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome.

  2. Oct 2, 2023 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Oct 23, 2023 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome.

Sources

  • CISA KEVConfirmed exploitationCVE-2023-5217

    Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-5217

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-5217

    30-day exploitation probability 49.0%

    first.org
  • NIST NVDVulnerability recordCVE-2023-5217

    Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2023-5217

    Google Chromium libvpx contains a heap buffer overflow vulnerability in vp8 encoding that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could impact web browsers using libvpx, including but not limited to Google Chrome

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.