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TI-2021-04275 Aliases CVE-2021-21172GHSA-mc2v-pp94-p8j7

Insufficient policy enforcement in File System API in Google Chrome on Windows prior to…

Priority LOW 39Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Insufficient policy enforcement in File System API in Google Chrome on Windows prior to 89.0.4389.72 allowed a remote attacker to bypass filesystem restrictions via a crafted HTML page.

Why it matters now

EPSS 0.0165 76th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Chrome (Google): 89.0.4389.72

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleChromebefore 89.0.4389.7289.0.4389.72Patch availableCNA
  • Chrome VendorGoogle Affected before 89.0.4389.72 Fixed in 89.0.4389.72 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*before 89.0.4389.72VulnerableGoogle
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 89.0.4389.72 Vulnerable ·Google
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Chrome (Google) Fixed in 89.0.4389.72

Fixed in the same release

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

  • Advisory ·

    Google Chrome — FEDORA-2021-4740239e28

    32 records Highest priority Priority CRITICAL 1 CRITICAL, 13 MEDIUM, 18 LOW

    Other records, highest priority first

    • TI-2021-04269 Race condition in Google ChromePriority CRITICAL 97
    • TI-2021-04280 Incorrect permission assignment in Google ChromePriority MEDIUM 46
    • TI-2021-04263 Out-of-bounds write in Google ChromePriority MEDIUM 42
    Show all 32 records → Advisory →
  • Advisory ·

    Google Chrome — FEDORA-2021-78547312f2

    32 records Highest priority Priority CRITICAL 1 CRITICAL, 13 MEDIUM, 18 LOW

    Other records, highest priority first

    • TI-2021-04269 Race condition in Google ChromePriority CRITICAL 97
    • TI-2021-04280 Incorrect permission assignment in Google ChromePriority MEDIUM 46
    • TI-2021-04263 Out-of-bounds write in Google ChromePriority MEDIUM 42
    Show all 32 records → Advisory →
Show 1 more group
  • Advisory ·

    Google Chrome — DSA-4886

    31 records Highest priority Priority CRITICAL 1 CRITICAL, 13 MEDIUM, 17 LOW

    Other records, highest priority first

    • TI-2021-04269 Race condition in Google ChromePriority CRITICAL 97
    • TI-2021-04280 Incorrect permission assignment in Google ChromePriority MEDIUM 46
    • TI-2021-04263 Out-of-bounds write in Google ChromePriority MEDIUM 42
    Show all 31 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-2021-21172
  2. 2026-10-03 Alias added: GHSA-mc2v-pp94-p8j7

References

Exploit 1

Advisory 6

  • 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