Google Chrome up to 86.0.4240.99 Freetype heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.7$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Google Chrome. This issue affects some unknown processing of the component Freetype. Such manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2020-15999. It is possible to launch the attack remotely. Furthermore, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Chrome (Web Browser). Affected by this issue is an unknown functionality of the component Freetype. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

The weakness was published 10/20/2020 as Stable Channel Update for Desktop - October 2020. The advisory is shared for download at chromereleases.googleblog.com. This vulnerability is handled as CVE-2020-15999. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but an exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/09/2026). It is expected to see the exploit prices for this product increasing in the near future.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 208626 (CentOS 6 : chromium-browser (RHSA-2020:4351)), which helps to determine the existence of the flaw in a target environment. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 11/17/2021:

Apply updates per vendor instructions.

Upgrading to version 86.0.4240.111 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Zero-Day.cz (585), Tenable (208626) and CERT Bund (WID-SEC-2026-0337). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Open Source CentOS
  • Debian Linux
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Gentoo Linux
  • Open Source Arch Linux
  • Mozilla Firefox
  • Mozilla Firefox ESR
  • Mozilla Thunderbird

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.6
NVD Vector: 🔍

CNA Base Score: 9.6
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 208626
Nessus Name: CentOS 6 : chromium-browser (RHSA-2020:4351)

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Chrome 86.0.4240.111

Timelineinfo

07/27/2020 🔍
10/20/2020 +85 days 🔍
10/20/2020 +0 days 🔍
10/26/2020 +6 days 🔍
02/09/2026 +1932 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: Stable Channel Update for Desktop - October 2020
Status: Confirmed

CVE: CVE-2020-15999 (🔍)
GCVE (CVE): GCVE-0-2020-15999
GCVE (VulDB): GCVE-100-163640
CERT Bund: WID-SEC-2026-0337 - Mozilla Firefox und Thunderbird: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/26/2020 07:44
Updated: 02/09/2026 10:28
Changes: 10/26/2020 07:44 (40), 11/27/2020 07:18 (2), 11/27/2020 07:22 (18), 04/20/2024 20:45 (27), 07/01/2024 08:25 (3), 07/25/2024 20:16 (1), 09/09/2024 22:29 (1), 10/13/2024 03:17 (2), 02/03/2025 18:05 (11), 02/05/2025 15:48 (10), 02/09/2026 10:28 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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