# CVE-2020-15999: Google Chrome FreeType Heap Buffer Overflow Vulnerability

> CVE-2020-15999: Google Chrome FreeType Heap Buffer Overflow Vulnerability. CVSS 9.6 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2020-15999
Last updated: 2025-10-21T23:35:33Z

- Published: 2020-11-03 00:00 UTC · Updated: 2025-10-21 23:35 UTC · Assigner: Chrome
- CVSS: 9.6 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS: 63.9%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2021-11-17, ransomware use: Unknown

## Description

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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Google: Chrome

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-15999)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2020-15999)
- [http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html](http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html)
- [https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop\_20.html](https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop_20.html)
- [https://crbug.com/1139963](https://crbug.com/1139963)
- [http://seclists.org/fulldisclosure/2020/Nov/33](http://seclists.org/fulldisclosure/2020/Nov/33)
- [https://googleprojectzero.blogspot.com/p/rca-cve-2020-15999.html](https://googleprojectzero.blogspot.com/p/rca-cve-2020-15999.html)
- [https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J3QVIGAAJ4D62YEJAJJWMCCBCOQ6TVL7/](https://lists.fedoraproject.org/archives/list/package-announce%2540lists.fedoraproject.org/message/J3QVIGAAJ4D62YEJAJJWMCCBCOQ6TVL7/)
- [https://security.gentoo.org/glsa/202011-12](https://security.gentoo.org/glsa/202011-12)
- [https://security.gentoo.org/glsa/202012-04](https://security.gentoo.org/glsa/202012-04)
- [https://security.gentoo.org/glsa/202401-19](https://security.gentoo.org/glsa/202401-19)
- [https://www.debian.org/security/2021/dsa-4824](https://www.debian.org/security/2021/dsa-4824)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2020-15999 · Markdown: https://rewindex.com/cve/CVE-2020-15999.md · JSON: https://rewindex.com/api/v1/cves/CVE-2020-15999 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:28.122Z