8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5 High
AI Score
Confidence
Low
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.016 Low
EPSS
Percentile
86.9%
05/06/2021
Warning
Multiple vulnerabilities were found in Opera. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, spoof user interface.
Opera earlier than 76.0.4017.107
Update to the latest version
Download Opera
Changelog for Opera 76
Stable Channel Update for Desktop
DoS
CVE-2021-212278.8Critical
CVE-2021-212284.3Warning
CVE-2021-212328.8Critical
CVE-2021-212308.8Critical
CVE-2021-212338.8Critical
CVE-2021-212318.8Critical
CVE-2021-212296.5High
blogs.opera.com/desktop/changelog-for-76/#b4017.107
chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_26.html
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21227
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21228
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21229
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21230
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21231
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21232
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21233
statistics.securelist.com/vulnerability-scan/month
threats.kaspersky.com/en/product/Opera/
www.opera.com
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5 High
AI Score
Confidence
Low
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.016 Low
EPSS
Percentile
86.9%