CVE-2021-21164

high

Published — · Modified —

CVSS v3

—

CVSS v2

—

VIR risk

8.0

Description

Insufficient data validation in Chrome on iOS in Google Chrome on iOS prior to 89.0.4389.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-21164

OS impact

OS	Version	Status	Fixed in
arch		fixed	`89.0.4389.72-1`
debian	bookworm	fixed	`0`
debian	bullseye	fixed	`0`
debian	forky	fixed	`0`
debian	sid	fixed	`0`
debian	trixie	fixed	`0`

References

https://security-tracker.debian.org/tracker/CVE-2021-21164

Verify integrity in audit chain (admin only). AS-IS.