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CVE-2020-26959

CVSS v3.1 8.8 (High)
88% Progress
CVSS v2.0 6.8 (Medium)
68% Progress
EPSS 0.31 % (71th)
0.31% Progress
Affected Products 3
Advisories 34
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

During browser shutdown, reference decrementing could have occured on a previously freed object, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

Weaknesses
CWE-416
Use After Free
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2020-12-09 01:15:13
(3 years ago)
Updated Date
2020-12-10 19:04:09
(3 years ago)

Affected Products

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 83.0 version cpe:2.3:a:mozilla:firefox < 83.0
  Mozilla Firefox Esr prior 78.5 version cpe:2.3:a:mozilla:firefox_esr < 78.5
  Mozilla Thunderbird prior 78.5 version cpe:2.3:a:mozilla:thunderbird < 78.5