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CVE-2021-38506
AST
High

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to…

CVSS
7.5
High
EPSS
0.01
p70
Published
2021-01-01
Updated
2021-01-01
Description

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Tags · CWE
Pre-auth
CWE-1021
CAPEC-103
CAPEC-181
CAPEC-222
CAPEC-504
CAPEC-506
CAPEC-587
CAPEC-654
Affected products
FirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefoxFirefox-esr
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Timeline
2021-01-01
Published
2021-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: H
High (H)
Privileges Required
PR: N
None (N)
User Interaction
UI: R
Required (R)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.015 · p70
Known exploited (KEV)
No
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-504 · CWE-1021
└ via CAPEC-654 · CWE-1021
└ via CAPEC-654 · CWE-1021
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
ProductVendorStatus
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefoxTracked
firefox-esrTracked
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Source databases
AST
DEB
CVE
RED
UBU
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