CVE-2025-1019
MEDIUMCVSS 4.3/10EPSS 0.34%
Last modified
CVE-2025-1019 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. The z-order of the browser windows could be manipulated to hide the fullscreen notification. This could potentially be leveraged to perform a spoofing attack. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
Description
The z-order of the browser windows could be manipulated to hide the fullscreen notification. This could potentially be leveraged to perform a spoofing attack. This vulnerability was fixed in Firefox 135 and Thunderbird 135.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 135.0 |
| Mozilla | Thunderbird | >= 131.0, < 135.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1940162Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-07/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-11/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-1019?
The z-order of the browser windows could be manipulated to hide the fullscreen notification. This could potentially be leveraged to perform a spoofing attack. This vulnerability was fixed in Firefox 135 and Thunderbird 135.
How severe is CVE-2025-1019?
CVE-2025-1019 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.
How do I fix CVE-2025-1019?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
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Are you affected by CVE-2025-1019?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST