CVE-2021-21148

ENISA EUVD: EUVD-2021-8539 ↗
Exploited in the Wild ✓ Confirmed 0-Day ★ Google Project Zero
Triaged: March 5, 2026 18 articles Published: 2021-02-09
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗ Advisory ↗ P0 Sheet ↗ CISA KEV ↗

EPSS Score

Source: FIRST.org · 2026-05-23
24.87%
probability
This CVE has a 24.87% probability of being exploited in the next 30 days.
0% Top 96.2th 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)
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 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
Jan. 24, 2021
Patched
Feb. 4, 2021
Reported by
Mattias Buelens
Root Cause Analysis
???

Exploits & PoC

Grayhaxor/CVE-2021-21148
2 2021-02-07
1 repo — triés par ⭐ Rechercher sur GitHub ↗

Signal Intelligence

Confidenceⓘ
95%
EPSS 24.87%
CVSS v3.1 8.8
Mentions 18
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 DateFeb 09, 2021