TI-2021-10946 Aliases CVE-2021-30551 GHSA-gmxf-qj4v-rf52

Type confusion in Google Chrome

CRITICAL 97Exploited in the wildCWE-843Published 2021-06-15 · Updated 2025-10-21

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 · CISA ADP. Fix status from CNA. Impact type from CWE-843 and the CVSS impact.

Summary

Type confusion in V8 in Google Chrome prior to 91.0.4472.101 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Why it matters now

Exploitation Active In CISA KEV since 2021-11-03CISA due date 2021-11-17

EPSS 0.64701 99th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Chrome (Google): 91.0.4472.101

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Active
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Google	Chrome	before 91.0.4472.101	91.0.4472.101	Patch available	CNA

Chrome VendorGoogle Affected before 91.0.4472.101 Fixed in 91.0.4472.101 Patch available CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:google:chrome::::::::	before 91.0.4472.101	Vulnerable	Google
cpe:2.3:o:fedoraproject:fedora:33:::::::*	33	Vulnerable	Fedoraproject
cpe:2.3:o:fedoraproject:fedora:34:::::::*	34	Vulnerable	Fedoraproject

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 91.0.4472.101 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 91.0.4472.101

Fixed in the same release

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

Release · 2021-06-15
Google Chrome 91.0.4472.101
10 records Highest priority Priority CRITICAL 1 CRITICAL, 9 MEDIUM
Other records, highest priority first
- TI-2021-10942 Out-of-bounds write in Google ChromePriority MEDIUM 44
- TI-2021-10939 Use after free in Google ChromePriority MEDIUM 41
- TI-2021-10948 Use after free in Google ChromePriority MEDIUM 40
Show all 10 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2021-11-03 Added to CISA KEV
2026-10-02 Threatist record created from CVE-2021-30551
2026-10-03 Alias added: GHSA-gmxf-qj4v-rf52

References

Exploit 1

https://crbug.com/1216437

Advisory 4

Other 1

https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html

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