CVE-2025-1018: Vulnerability in Mozilla Firefox
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.
AI Analysis
Technical Summary
This vulnerability involves the fullscreen notification in Mozilla Firefox being hidden prematurely when fullscreen mode is re-requested rapidly. This flaw could allow an attacker to spoof the fullscreen notification, potentially misleading users about the browser's state. The issue was reported by Irvan Kurniawan and fixed in Firefox 135 and Thunderbird 135. It is classified under CWE-1021 (Improper Restriction of Rendered UI Layers or Frames). The CVSS 3.1 vector indicates it is remotely exploitable without privileges or user interaction, impacting confidentiality, integrity, and availability at a low level.
Potential Impact
The vulnerability could allow an attacker to perform a spoofing attack by hiding the fullscreen notification, potentially deceiving users about the browser's fullscreen state. This may lead to user interface spoofing risks but does not directly indicate code execution or data breach. The impact is rated moderate by Mozilla and high by CVSS due to the potential for user deception.
Mitigation Recommendations
This vulnerability has been fixed in Firefox 135 and Thunderbird 135. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are required as the fix is officially released and available.
CVE-2025-1018: Vulnerability in Mozilla Firefox
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the fullscreen notification in Mozilla Firefox being hidden prematurely when fullscreen mode is re-requested rapidly. This flaw could allow an attacker to spoof the fullscreen notification, potentially misleading users about the browser's state. The issue was reported by Irvan Kurniawan and fixed in Firefox 135 and Thunderbird 135. It is classified under CWE-1021 (Improper Restriction of Rendered UI Layers or Frames). The CVSS 3.1 vector indicates it is remotely exploitable without privileges or user interaction, impacting confidentiality, integrity, and availability at a low level.
Potential Impact
The vulnerability could allow an attacker to perform a spoofing attack by hiding the fullscreen notification, potentially deceiving users about the browser's fullscreen state. This may lead to user interface spoofing risks but does not directly indicate code execution or data breach. The impact is rated moderate by Mozilla and high by CVSS due to the potential for user deception.
Mitigation Recommendations
This vulnerability has been fixed in Firefox 135 and Thunderbird 135. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are required as the fix is officially released and available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2025-02-04T07:26:42.829Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2025-07/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-11/","vendor":"Mozilla"}]
Threat ID: 69dd057382d89c981f016f99
Added to database: 4/13/2026, 3:02:11 PM
Last enriched: 4/13/2026, 3:17:46 PM
Last updated: 4/14/2026, 6:03:16 AM
Views: 4
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