CVE-2021-21193

Google — Google Chromium Blink Use-After-Free Vulnerability

CISA KEV · in the CISA KEV catalog since 2021-11-03

What EVULNABLE says

EVULNABLE Risk · priority 75/100 Urgent Raised to the floor for a confirmed exploited vulnerability. Intelligence coverage 75/90 — no pre-patch disclosure data
Overdue by 4.8 yearsCISA KEVActively Exploited

Why it matters: Listed in the CISA KEV catalog, and Confirmed exploitation in the wild.

Patch This Cycle

The priority band answers “how soon”, not “how bad” — see Methodology for what it weighs and where it abstains.

The evidence behind it

Published measurements for CVE-2021-21193
MeasureValueSource
CVSS base score 8.8 NVD
FIRST EPSS 0.099 (95.2nd pctl) FIRST
Actively exploited Confirmed CISA KEV
Ransomware campaign use Unknown or none CISA KEV
CISA remediation deadline 2021-11-17 — Overdue by 4.8 years CISA KEV
Intelligence coverage 75/90 — no pre-patch disclosure data

What CISA says to do

This page is an opinion about urgency. Where it and a source of record disagree, the source of record is the record.

NVD ↗ CISA KEV ↗