Search/CVE-2025-5020
● CVE — Medium

CVE-2025-5020

VendormozillaProductfirefoxDiscoveredMay 21, 2025UpdatedOct 5, 2026

Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client. This vulnerability was fixed in Firefox for iOS 139.

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CVSS v3.1
4.3 MEDIUM
EPSS
0.24%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Aug 16, 2026 → Oct 22, 2026
▲ 0.03pp
0.21% → 0.24% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionREQUIRED
ScopeUNCHANGED
ConfidentialityNONE
IntegrityLOW
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Connections
2 relationships
Timeline
disclosure → media coverage
May 21, 2025
Disclosure — published as a CVE record. · last revised by NVD Oct 5, 2026