CVE-2021-21164 is a medium-severity vulnerability affecting Google Chrome on iOS prior to version 89.0.4389.72, as well as related products from Apple, Debian, and Fedora. It stems from insufficient data validation, allowing a remote attacker to leak cross-origin data through a crafted HTML page. The vulnerability has a CVSS score of 6.5, indicating a network-based attack requiring user interaction, with a high impact on confidentiality but no impact on integrity or availability. While not listed in CISA's KEV catalog and lacking public exploit code, it garnered significant community discussion and media coverage, including reports of it being actively exploited at the time of discovery.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 89.0.4389.72CPE matchmatch criteria | cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* | ||
32CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.