CVE-2021-21186

MEDIUM 4.3CVE-2021-21186 · Published 09/03/2021 · updated 17/06/2026

In short

CVE-2021-21186 is a MEDIUM (CVSS 4.3) vulnerability affecting chrome (google).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 66.6% of all vulnerabilities.
Fix: update to 89.0.4389.72 or later.

Package	Affected versions	Patched versions
chrome google	`< 89.0.4389.72`	`89.0.4389.72`

Description

Insufficient policy enforcement in QR scanning in Google Chrome on iOS prior to 89.0.4389.72 allowed an attacker who convinced the user to scan a QR code to bypass navigation restrictions via a crafted QR code.

References

chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html · Release Notes
crbug.com/1153445 · Permissions Required
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT
security.gentoo.org/glsa/202104-08 · Third Party Advisory
debian.org/security/2021/dsa-4886 · Third Party Advisory

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