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

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.

9.6 CRITICALEPSS 63.89%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 02:57 UTC

OverviewCVSS details

9.6CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Nov 3, 2020
Assigner: Chrome

Affected

Chrome (Google)

Versions: before 86.0.4240.111
Fixed in: 86.0.4240.111

Exploitation

Public exploit: Yes · 2 references
CISA KEV: Listed · Nov 3, 2021
KEV due date: Nov 17, 2021
Ransomware use: Unknown
SSVC: Exploitation active · Automatable no · Impact partial

EPSS · FIRST, scored Nov 7

63.89%chance of exploitation in 30 days

Higher than 99.22% of CVEs

CVSS 3.1 · NVD

9.6Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

4.3Medium

AV:N/AC:M/Au:N/C:N/I:N/A:P

Attack vector: Network
Attack complexity: Medium
Authentication: None
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.6	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
4.3	MEDIUM	2.0NVD	AV:N/AC:M/Au:N/C:N/I:N/A:P

CISA required action

⚡ Known exploited · remediation due Nov 17, 2021

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Details

CVE ID: CVE-2020-15999
Status: Analyzed
Assigner (CNA): Chrome
Published: Nov 3, 2020
Last modified: 2026-06-17 02:57 UTC
Weaknesses: CWE-787
CWE-120

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 09:26 UTC.