CVE-2021-21118

high-risk
Published 2021-02-09

Insufficient data validation in V8 in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.

Do I need to act?

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27.8% chance of exploitation in next 30 days
EPSS score — higher than 72% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Microsoft Google

References (6)

Release Notes https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_...
Permissions Required https://crbug.com/1161357
Patch https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21118
Release Notes https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_...
Permissions Required https://crbug.com/1161357
Patch https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21118
52
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 15/34 · Moderate
Exposure 7/34 · Low