CVE-2021-21141

MEDIUM 6.5CVE-2021-21141 · Published 09/02/2021 · updated 17/06/2026

In short

CVE-2021-21141 is a MEDIUM (CVSS 6.5) vulnerability affecting chrome (google), edge (microsoft).
Chance of exploitation in the next 30 days (EPSS): 5.4%, higher than 92.7% of all vulnerabilities.
Fix: update to 88.0.4324.96, 88.0.705.74 or later.

Package	Affected versions	Patched versions
chrome google	`< 88.0.4324.96`	`88.0.4324.96`
edge microsoft	`< 88.0.705.74`	`88.0.705.74`

Description

Insufficient policy enforcement in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass file extension policy via a crafted HTML page.

References

chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html · Release Notes
crbug.com/1140435 · Permissions Required
msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21141 · Patch

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Package

Affected versions

Patched versions

chrome

google

< 88.0.4324.96

88.0.4324.96

edge

microsoft

< 88.0.705.74

88.0.705.74

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See all →