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TI-2021-04247 Aliases CVE-2021-21143GHSA-ww6m-3fjc-mvfw

Out-of-bounds write in Google Chrome

Priority MEDIUM 40CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Heap buffer overflow in Extensions in Google Chrome prior to 88.0.4324.146 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension.

Why it matters now

EPSS 0.0083 57th percentileScored 2026-11-07
Fix Fixed Chrome (Google): 88.0.4324.146

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleChromebefore 88.0.4324.14688.0.4324.146Patch availableCNA
  • Chrome VendorGoogle Affected before 88.0.4324.146 Fixed in 88.0.4324.146 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*before 88.0.4324.146VulnerableGoogle
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
  • cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 88.0.4324.146 Vulnerable ·Google
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject

Remediation

  • Fix · CNA Chrome (Google) Fixed in 88.0.4324.146

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Google Chrome — FEDORA-2021-7fb30b9381

    7 records Highest priority Priority CRITICAL 1 CRITICAL, 5 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-04252 Out-of-bounds write in Google ChromePriority CRITICAL 97
    • TI-2021-04250 Use after free in Google ChromePriority MEDIUM 44
    • TI-2021-04246 Use after free in Google ChromePriority MEDIUM 43
    Show all 7 records → Advisory →
  • Advisory ·

    Google Chrome — FEDORA-2021-05afa65d39

    7 records Highest priority Priority CRITICAL 1 CRITICAL, 5 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-04252 Out-of-bounds write in Google ChromePriority CRITICAL 97
    • TI-2021-04250 Use after free in Google ChromePriority MEDIUM 44
    • TI-2021-04246 Use after free in Google ChromePriority MEDIUM 43
    Show all 7 records → Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21143
  2. 2026-10-03 Alias added: GHSA-ww6m-3fjc-mvfw

References

Advisory 4

Other 1

  • TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
See all 7586 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences