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TI-2021-10922 Aliases CVE-2021-30527GHSA-x27g-gchh-mgqc

Use after free in Google Chrome

Priority MEDIUM 40CWE-416Published · 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-416 and the CVSS impact.

Summary

Use after free in WebUI in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.

Why it matters now

EPSS 0.00962 61st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Chrome (Google): 91.0.4472.77

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleChromebefore 91.0.4472.7791.0.4472.77Patch availableCNA
  • Chrome VendorGoogle Affected before 91.0.4472.77 Fixed in 91.0.4472.77 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*before 91.0.4472.77VulnerableGoogle
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
  • cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 91.0.4472.77 Vulnerable ·Google
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject

Remediation

  • Fix · CNA Chrome (Google) Fixed in 91.0.4472.77

Fixed in the same release

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

  • Release ·

    Google Chrome 91.0.4472.77

    20 records Highest priority Priority CRITICAL 1 CRITICAL, 11 MEDIUM, 8 LOW

    Other records, highest priority first

    • TI-2021-10928 Incorrect authorization in Google ChromePriority CRITICAL 86
    • TI-2021-10923 Use after free in Google ChromePriority MEDIUM 41
    • TI-2021-10917 Use after free in Google ChromePriority MEDIUM 41
    Show all 20 records →

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-2021-30527
  2. 2026-10-03 Alias added: GHSA-x27g-gchh-mgqc

References

Exploit 1

Advisory 4

  • 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