Vulnerability Details : CVE-2020-26953
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.
Exploit prediction scoring system (EPSS) score for CVE-2020-26953
Probability of exploitation activity in the next 30 days: 0.10%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 41 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-26953
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST |
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
2.8
|
1.4
|
NIST |
CWE ids for CVE-2020-26953
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The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain, which can lead to user confusion about which interface the user is interacting with.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-26953
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1656741
Issue Tracking;Permissions Required;Vendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-52/
Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2020-51/
Vendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-50/
Vendor Advisory
Products affected by CVE-2020-26953
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*