CVE-2021-21193
ENISA EUVD: EUVD-2021-8584 ↗
Exploited in the Wild
✓ Confirmed 0-Day
★ Google Project Zero
Triaged: March 5, 2026
16 articles
Published: 2021-03-16
EPSS Score
Source: FIRST.org · 2026-05-23
21.28%
probability
This CVE has a 21.28% probability
of being exploited in the next 30 days.
0%
Top 95.8th 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)Use after free in Blink in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected Products
Google
Chrome
unspecified
Attack Intelligence
CWE-118
· Incorrect Access of Indexable Resource ('Range Error')
CWE-119
· Buffer Overflow
CWE-416
· Use After Free
CWE-664
· Improper Control of a Resource Through its Lifetime
CWE-666
· Operation on Resource in Wrong Phase of Lifetime
CWE-672
· Operation on a Resource after Expiration or Release
CWE-825
· Expired Pointer Dereference
Google Project Zero
Discovered
March 9, 2021
Patched
March 12, 2021
Reported by
???
Root Cause Analysis
???
https://crbug.com/1186287
x_refsource_MISC
https://www.debian.org/security/2021/dsa-4886
vendor-advisory
x_refsource_DEBIAN
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N52OWF4BAP3JNK2QYGU3Q6QUVDZDCIMQ/
vendor-advisory
x_refsource_FEDORA
https://security.gentoo.org/glsa/202104-08
vendor-advisory
x_refsource_GENTOO
Signal Intelligence
Confidence
95%
EPSS
21.28%
CVSS v3.1
8.8
Mentions
16
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 DateMar 16, 2021