CVE-2020-26953

CVSS V2 Medium 4.3 CVSS V3 Medium 4.3
Description
It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
Overview
  • CVE ID
  • CVE-2020-26953
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-12-09T01:15:12
  • Last Modified Date
  • 2020-12-10T16:41:02
Weakness Enumerations
CWE URL
CWE-1021 http://cwe.mitre.org/data/definitions/1021.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 83.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* 1 OR 78.5
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* 1 OR 78.5
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://www.mozilla.org/security/advisories/mfsa2020-50/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-51/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-52/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1656741 Issue Tracking Permissions Required Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-26953
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26953
History
Created Old Value New Value Data Type Notes
2022-05-10 07:30:45 Added to TrackCVE
2022-12-05 17:48:15 2020-12-09T01:15Z 2020-12-09T01:15:12 CVE Published Date updated
2022-12-05 17:48:15 2020-12-10T16:41:02 CVE Modified Date updated
2022-12-05 17:48:15 Analyzed Vulnerability Status updated