Google Chrome FreeType Heap Buffer Overflow Vulnerability

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• cpe debian/debian linux10.0
• cpe fedoraproject/fedora31
• cpe freetype/freetypeversion unspecified
• cpe google/chromeversion unspecified
• cpe netapp/ontap select deploy administration utilityversion unspecified
• cpe opensuse/backports sle15.0
• vendor Google Chrome FreeTypeversion unspecified

How to fix CVE-2020-15999

• Recommended remediation

  Apply updates per vendor instructions. CISA due date Nov 17, 2021.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

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

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. Nov 2, 2020 · Catalog

   Detected

   Google Chrome uses FreeType, an open-source software library to render fonts, which contains a heap buffer overflow vulnerability in the function Load_SBit_Png when processing PNG images embedded into fonts. This vulnerability is part of an exploit chain with CVE-2020-17087 on Windows and CVE-2020-16010 on Android.

2. Nov 3, 2021 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Nov 17, 2021 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   Google Chrome uses FreeType, an open-source software library to render fonts, which contains a heap buffer overflow vulnerability in the function Load_SBit_Png when processing PNG images embedded into fonts. This vulnerability is part of an exploit chain with CVE-2020-17087 on Windows and CVE-2020-16010 on Android.

Sources

• CISA KEVConfirmed exploitationCVE-2020-15999

  Google Chrome uses FreeType, an open-source software library to render fonts, which contains a heap buffer overflow vulnerability in the function Load_SBit_Png when processing PNG images embedded into fonts. This vulnerability is part of an exploit chain with CVE-2020-17087 on Windows and CVE-2020-16010 on Android.

  cisa.gov
• CVE.orgVulnerability recordCVE-2020-15999

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2020-15999

  30-day exploitation probability 63.9%

  first.org
• NIST NVDVulnerability recordCVE-2020-15999

  Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2020-15999

  Google Chrome uses FreeType, an open-source software library to render fonts, which contains a heap buffer overflow vulnerability in the function Load_SBit_Png when processing PNG images embedded into fonts. This vulnerability is part of an exploit chain with CVE-2020-17087 on Wi

  vulncheck.com

References

• Broken Link · lists.opensuse.org
• Mailing List · seclists.org
• Third Party Advisory · chromereleases.googleblog.com
• Exploit · crbug.com
• VulnCheck exploitation evidence · docs.google.com
• Exploit · googleprojectzero.blogspot.com
• VulnCheck exploitation evidence · googleprojectzero.github.io
• Release Notes · lists.fedoraproject.org
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · savannah.nongnu.org
• Third Party Advisory · security.gentoo.org
• Third Party Advisory · security.gentoo.org
• VulnCheck exploitation evidence · cisa.gov
• VulnCheck exploitation evidence · ox.security

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.