CVE-2021-21134

Description

Incorrect security UI in Page Info in Google Chrome on iOS prior to 88.0.4324.96 allowed a remote attacker to spoof security UI via a crafted HTML page.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 15.32% Top 10%
Vendor Advisory googleblog.com
Affected: Google Chrome
Published at:
Updated at:

References

Link Tags
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html release notes vendor advisory
https://crbug.com/1157800 third party advisory permissions required
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21134 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-21134?
CVE-2021-21134 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21134?
To fix CVE-2021-21134, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21134 being actively exploited in the wild?
It is possible that CVE-2021-21134 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~15% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21134?
CVE-2021-21134 affects Google Chrome.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.