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
9.3 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
0.006 Low
EPSS
Percentile
78.3%
04/19/2021
High
Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to cause denial of service, bypass security restrictions, execute arbitrary code, spoof user interface, gain privileges.
Mozilla Firefox ESR earlier than 78.10
Update to the latest version
Download Firefox ESR
ACE
CVE-2021-239617.4High
CVE-2021-239948.8Critical
CVE-2021-299468.8Critical
CVE-2021-299456.5High
CVE-2021-240028.8Critical
CVE-2021-239986.5High
CVE-2021-239958.8Critical
CVE-2021-239998.8Critical
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23961
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23994
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23995
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23998
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23999
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24002
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29945
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29946
statistics.securelist.com/vulnerability-scan/month
threats.kaspersky.com/en/product/Mozilla-Firefox-ESR/
www.mozilla.org/en-US/firefox/all/#product-desktop-esr
www.mozilla.org/en-US/security/advisories/mfsa2021-15/
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
9.3 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
0.006 Low
EPSS
Percentile
78.3%