CVE-2021-21225

ENISA EUVD: EUVD-2021-8616 ↗
✓ Confirmed 0-Day
Triaged: March 20, 2026 1 article Published: 2021-04-26
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗

EPSS Score

Source: FIRST.org · 2026-05-23
1.82%
probability
This CVE has a 1.82% probability of being exploited in the next 30 days.
0% Top 83.1th percentile of all CVEs 100%

CVSS v3.1

Source: NVD
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)
Out of bounds memory access in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Affected Products

Google
Chrome
unspecified

Attack Intelligence

Signal Intelligence

Confidenceⓘ
85%
EPSS 1.82%
CVSS v3.1 8.8
Mentions 1
Last Seen Apr 21, 2021

CNA Information

CNA Assigner
Chrome

Analyst Note

BleepingComputer headline explicitly states this is an 'exploited Chrome zero-day dropped on Twitter last week,' confirming in-the-wild exploitation. The 2021 CVE year combined with a Google fix announcement indicates exploitation occurred before or concurrent with patching. High confidence despite limited article data due to explicit zero-day language in authoritative source.

Triage Info

Decided atMar 20, 2026
Published DateApr 26, 2021