CVE-2025-1019
published 2025-02-04CVE-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…
PriorityP417medium4.3CVSS 3.1
AVNACLPRNUIRSUCNILAN
EPSS
0.36%
29.8th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 135.0-1 (sid) | firefox 135.0-1 (sid) |
| mozilla | firefox | < 135.0 | 135.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 135.0+build2-0ubuntu0.20.04.1 | 135.0+build2-0ubuntu0.20.04.1 |
| mozilla | thunderbird | >= 0 < 1:140.7.1+build1-0ubuntu0.22.04.1 | 1:140.7.1+build1-0ubuntu0.22.04.1 |
| mozilla | thunderbird | >= 131.0 < 135.0 | 135.0 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
osv9.8CRITICAL
vendor_ubuntu9.8CRITICAL
vendor_debian4.3MEDIUM
vendor_redhat4.3MEDIUM
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2026-02-02
CVE-2025-8031 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2025-02-11·CVSS 9.8
CVE-2025-1016 [CRITICAL] Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Several security issues were fixed in Firefox.
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information across domains, or execute arbitrary code. (CVE-2025-1011,
CVE-2025-1013, CVE-2025-1014, CVE-2025-1016, CVE-2025-1017, CVE-2025-1018,
CVE-2025-1019, CVE-2025-1020)
Ivan Fratric discovered that Firefox did not properly handle XSLT data,
leading to a use-after-free vulnerability. An attacker could potentially
exploit this issue to cause a denial of service, or execute arbitrary code.
(CVE-2025-1009)
Atte Kettunen discovered that Firefox did not properly manage memory in
the Custom High
Red Hat
firefox: thunderbird: Fullscreen notification not properly displayed
vendor_redhat·2025-02-04·CVSS 4.3
CVE-2025-1019 [MEDIUM] CWE-451 firefox: thunderbird: Fullscreen notification not properly displayed
firefox: thunderbird: Fullscreen notification not properly displayed
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 affects Firefox < 135 and Thunderbird < 135.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: 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.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Fix deferred
Package: firefox-flatpak-container (Red Hat Enterpri
Debian
CVE-2025-1019: firefox - The z-order of the browser windows could be manipulated to hide the fullscreen n...
vendor_debian·2025·CVSS 4.3
CVE-2025-1019 [MEDIUM] CVE-2025-1019: firefox - The z-order of the browser windows could be manipulated to hide the fullscreen n...
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 affects Firefox < 135 and Thunderbird < 135.
Scope: local
sid: resolved (fixed in 135.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-07: CVE-2025-1019
vendor_mozilla·CVSS 4.3
CVE-2025-1019 [MEDIUM] Mozilla Foundation Security Advisory 2025-07: CVE-2025-1019
Mozilla Foundation Security Advisory 2025-07
CVE: CVE-2025-1019
Product: Firefox
Impact: high
Fixed in: Firefox 135
Mozilla
Mozilla Foundation Security Advisory 2025-11: CVE-2025-1019
vendor_mozilla·CVSS 4.3
CVE-2025-1019 [MEDIUM] Mozilla Foundation Security Advisory 2025-11: CVE-2025-1019
Mozilla Foundation Security Advisory 2025-11
CVE: CVE-2025-1019
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 135
VulDB
Mozilla Thunderbird up to 134 Fullscreen Notification ui layer (Nessus ID 216055)
vuldb·2026-10-01·CVSS 4.3
CVE-2025-1019 [MEDIUM] Mozilla Thunderbird up to 134 Fullscreen Notification ui layer (Nessus ID 216055)
A vulnerability, which was classified as problematic, has been found in Mozilla Thunderbird up to 134. The impacted element is an unknown function of the component Fullscreen Notification Handler. This manipulation causes improper restriction of rendered ui layers.
This vulnerability is handled as CVE-2025-1019. The attack can be initiated remotely. There is not any exploit available.
It is advisable to upgrade the affected component.
VulDB
Mozilla Firefox up to 134 Fullscreen Notification ui layer (Nessus ID 216055)
vuldb·2026-10-01·CVSS 4.3
CVE-2025-1019 [MEDIUM] Mozilla Firefox up to 134 Fullscreen Notification ui layer (Nessus ID 216055)
A vulnerability classified as problematic was found in Mozilla Firefox up to 134. The affected element is an unknown function of the component Fullscreen Notification Handler. The manipulation results in improper restriction of rendered ui layers.
This vulnerability is known as CVE-2025-1019. It is possible to launch the attack remotely. No exploit is available.
Upgrading the affected component is advised.
OSV
firefox vulnerabilities
osv·2025-02-11·CVSS 9.8
CVE-2025-1011 [CRITICAL] firefox vulnerabilities
firefox vulnerabilities
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information across domains, or execute arbitrary code. (CVE-2025-1011,
CVE-2025-1013, CVE-2025-1014, CVE-2025-1016, CVE-2025-1017, CVE-2025-1018,
CVE-2025-1019, CVE-2025-1020)
Ivan Fratric discovered that Firefox did not properly handle XSLT data,
leading to a use-after-free vulnerability. An attacker could potentially
exploit this issue to cause a denial of service, or execute arbitrary code.
(CVE-2025-1009)
Atte Kettunen discovered that Firefox did not properly manage memory in
the Custom Highlight API, leading to a use-after-free vulnerability. An
attacke
OSV
CVE-2025-1019: The z-order of the browser windows could be manipulated to hide the fullscreen notification
osv·2025-02-04·CVSS 4.3
CVE-2025-1019 [MEDIUM] CVE-2025-1019: The z-order of the browser windows could be manipulated to hide the fullscreen notification
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 affects Firefox < 135 and Thunderbird < 135.
GHSA
GHSA-gg39-4c5c-pfx2: The z-order of the browser windows could be manipulated to hide the fullscreen notification
ghsa_unreviewed·2025-02-04
CVE-2025-1019 [MEDIUM] CWE-1021 GHSA-gg39-4c5c-pfx2: The z-order of the browser windows could be manipulated to hide the fullscreen notification
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 affects Firefox < 135 and Thunderbird < 135.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-02-04
Published