High severity · published Nov 3, 2021
CVE-2021-29993
Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs
8.1
CVSS
0.7%
EPSS
No
On KEV
Description
Firefox for Android allowed navigations through the `intent://` protocol, which could be used to cause crashes and UI spoofs. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FM
Firefox Mobile · Mozilla
before 92.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29993
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-29993
Broken Link
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1712242%2C1708767%2C1712240%2C1708544%2C1729259
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-38/
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