CVE-2021-21186: Insufficient policy enforcement in QR scanning
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.
Credit
Affected Software
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2021-21159
- CVE-2021-21160
- CVE-2021-21161
- CVE-2021-21162
- CVE-2021-21163
- CVE-2021-21164
- CVE-2021-21165
- CVE-2021-21166
- CVE-2021-21167
- CVE-2021-21168
- CVE-2021-21169
- CVE-2021-21170
- CVE-2021-21171
- CVE-2021-21172
- CVE-2021-21173
- CVE-2021-21174
- CVE-2021-21175
- CVE-2021-21176
- CVE-2021-21177
- CVE-2021-21178
- CVE-2021-21179
- CVE-2021-21180
- CVE-2020-27844
- CVE-2021-21181
- CVE-2021-21182
- CVE-2021-21183
- CVE-2021-21184
- CVE-2021-21185
- CVE-2021-21187
- CVE-2021-21188
- CVE-2021-21189
- CVE-2021-21190
- CVE-2021-21200
Frequently Asked Questions
What is the severity of CVE-2021-21186?
CVE-2021-21186 has been classified as a moderate severity vulnerability due to insufficient policy enforcement in QR scanning.
How do I fix CVE-2021-21186?
To fix CVE-2021-21186, users should update Google Chrome to version 89.0.4389.72 or later.
What platforms are affected by CVE-2021-21186?
CVE-2021-21186 affects Google Chrome on iOS and various versions of Chromium on Debian and Fedora.
What type of vulnerability is CVE-2021-21186?
CVE-2021-21186 is an insufficient policy enforcement vulnerability that allows bypassing navigation restrictions.
Can scanning a QR code lead to exploitation of CVE-2021-21186?
Yes, an attacker could exploit CVE-2021-21186 by convincing a user to scan a crafted QR code.