CVE-2021-21169

ENISA EUVD: EUVD-2021-8560 ↗
✓ Confirmed 0-Day
Triaged: March 20, 2026 2 articles Published: 2021-03-09
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗

EPSS Score

Source: FIRST.org · 2026-05-23
1.28%
probability
This CVE has a 1.28% probability of being exploited in the next 30 days.
0% Top 79.8th 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 89.0.4389.72 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.

Affected Products

Google
Chrome
unspecified

Attack Intelligence

Signal Intelligence

Confidenceⓘ
85%
EPSS 1.28%
CVSS v3.1 8.8
Mentions 2
Last Seen Mar 09, 2021

CNA Information

CNA Assigner
Chrome

Analyst Note

Article [1] explicitly names this CVE as an 'actively exploited Chrome zero-day bug' fixed by Google in 2021, with clear evidence of in-the-wild exploitation prior to patching. The timing and explicit zero-day designation in an authoritative source (BleepingComputer reporting on Google's own disclosure) supports confirmed status.

Triage Info

Decided atMar 20, 2026
Published DateMar 09, 2021