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CVE-2020-26968

Date: December 8, 2020

Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4. 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 < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

Severity Score

Related Resources (10)

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1551615%2C1607762%2C1656697%2C1657739%2C1660236%2C1667912%2C1671479%2C1671923
https://access.redhat.com/security/cve/CVE-2020-26968
https://www.mozilla.org/security/advisories/mfsa2020-52/
https://security-tracker.debian.org/tracker/CVE-2020-26968
https://www.mozilla.org/security/advisories/mfsa2020-51/
https://nvd.nist.gov/vuln/detail/CVE-2020-26968
https://www.mozilla.org/security/advisories/mfsa2020-50/
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-26968
https://security.alpinelinux.org/vuln/CVE-2020-26968
https://www.mend.io/vulnerability-database/CVE-2020-26968

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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