High severity · published Jul 9, 2020
CVE-2020-12426
Mozilla developers and community members reported memory safety bugs present in Firefox 77
8.8
CVSS
1.6%
EPSS
No
On KEV
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 77. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 78.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 78.0 · source: NVD
LE
Leap · Opensuse
15.1; 15.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12426
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12426
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
Exploit
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1608068%2C1609951%2C1631187%2C1637682
Third Party Advisory
https://security.gentoo.org/glsa/202007-10
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-24/
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