CVE-2021-29993
HIGH
8.1
CVSS Score
Published: November 3, 2021 at 12:04 AM UTC
Updated: August 19, 2026 at 03:29 PM UTC
2 products affected across 1 vendorFirefox MobileFirefox
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Severity
HIGH8.1
Exploit prediction
EPSS 0.7%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 92.0
Affected range stops below 92.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCBroken Link
Source: [email protected]
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1712242%2C1708767%2C1712240%2C1708544%2C1729259x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2021-38/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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