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
9.7 High
AI Score
Confidence
High
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
0.027 Low
EPSS
Percentile
90.3%
04/12/2021
Warning
Multiple vulnerabilities were found in Opera. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service.
Opera earlier than 77.0.4054.146
Update to the latest version
Download Opera
Changelog for Opera 77
Stable Channel Update for Desktop
ACE
CVE-2021-305568.8Critical
CVE-2021-305558.8Critical
CVE-2021-305548.8Critical
CVE-2021-305578.8Critical
blogs.opera.com/desktop/changelog-for-77/#b4054.146
chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop_17.html
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30554
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30555
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30556
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30557
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
9.7 High
AI Score
Confidence
High
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
0.027 Low
EPSS
Percentile
90.3%