Search/CVE-2025-1018
● CVE — Medium

CVE-2025-1018

VendormozillaProductfirefox, thunderbirdDiscoveredFeb 4, 2025UpdatedOct 5, 2026

The fullscreen notification is prematurely hidden when fullscreen is re-requested quickly by the user. This could have been leveraged to perform a potential spoofing attack. This vulnerability was fixed in Firefox 135 and Thunderbird 135.

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CVSS v3.1
5.3 MEDIUM
EPSS
0.42%
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 → Aug 31, 2026
● 0.01pp
0.41% → 0.42% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityLOW
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Connections
3 relationships
Timeline
disclosure → media coverage
Feb 4, 2025
Disclosure — published as a CVE record. · last revised by NVD Oct 5, 2026