CVE-2021-30563
ENISA EUVD: EUVD-2021-17483 ↗
Exploited in the Wild
✓ Confirmed 0-Day
★ Google Project Zero
Triaged: March 5, 2026
12 articles
Published: 2021-08-03
EPSS Score
Source: FIRST.org · 2026-05-23
3.06%
probability
This CVE has a 3.06% probability
of being exploited in the next 30 days.
0%
Top 86.9th percentile of all CVEs
100%
CVSS v3.1
Source: VulnerabilityLookup (CIRCL)8.8
HIGH
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v2 (legacy)
6.8
MEDIUM
Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
AV:N/AC:M/Au:N/C:P/I:P/A:P
Description
VulnerabilityLookup (CNA)Type Confusion in V8 in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected Products
Google
Chrome
unspecified
Attack Intelligence
Google Project Zero
Discovered
July 12, 2021
Patched
July 15, 2021
Reported by
???
Root Cause Analysis
???
https://crbug.com/1228407
x_refsource_MISC
Signal Intelligence
Confidence
95%
EPSS
3.06%
CVSS v3.1
8.8
Mentions
12
Last Seen
Feb 14, 2022
CNA Information
CNA Assigner
Chrome
Analyst Note
Auto-imported from Google Project Zero — confirmed zero-day by definition.
Triage Info
Decided atMar 05, 2026
Published DateAug 03, 2021