CVE-2021-21121

moderate-risk
Published 2021-02-09

Use after free in Omnibox in Google Chrome on Linux prior to 88.0.4324.96 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.

Do I need to act?

~
4.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.6/10 Critical
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/1161143
Third Party Advisory https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21121
Release Notes https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_...
Permissions Required https://crbug.com/1161143
Third Party Advisory https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21121
47
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 8/34 · Low
Exposure 7/34 · Low