Is CVE-2021-4102 in the CISA KEV catalog?

Yes. CVE-2021-4102 is on the CISA Known Exploited Vulnerabilities list, added 2021-12-15.

What is the CVSS severity of CVE-2021-4102?

CVE-2021-4102 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-4102?

CVE-2021-4102 has an EPSS score of 7.84% (94th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2021-4102

HIGHCISA KEVEPSS 94th pctl

8.8

CVSS v3

NVD

Description

Use after free in V8 in Google Chrome prior to 96.0.4664.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CWE-416Use After Free

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

7.84%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Google Chromium V8 Use-After-Free Vulnerability

Google Chromium V8 Engine contains a use-after-free vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Apply updates per vendor instructions.

Remediation due: 2021-12-29

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.