CVE-2025-10534
published 2025-09-16CVE-2025-10534: Spoofing issue in the Site Permissions component. This vulnerability was fixed in Firefox 143 and Thunderbird 143.
PriorityP340high8.1CVSS 3.1
AVNACLPRNUIRSUCHIHAN
EPSS
0.33%
24.9th percentile
Spoofing issue in the Site Permissions component. This vulnerability was fixed in Firefox 143 and Thunderbird 143.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 143.0-1 (sid) | firefox 143.0-1 (sid) |
| mozilla | firefox | < 143.0 | 143.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 143.0 | 143.0 |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
osv8.1HIGH
vendor_debian8.1HIGH
vendor_redhat8.1HIGH
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Red Hat
firefox: Spoofing issue in the Site Permissions component
vendor_redhat·2025-09-16·CVSS 8.1
CVE-2025-10534 [HIGH] firefox: Spoofing issue in the Site Permissions component
firefox: Spoofing issue in the Site Permissions component
Spoofing issue in the Site Permissions component. This vulnerability affects Firefox < 143 and Thunderbird < 143.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:Spoofing issue in the Site Permissions component
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) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: firefox (Red Hat Enterprise Linux 7) - Not affected
Package: firefox (Red Hat Enterprise Linux 8) - Not affected
Package: firefox (R
Debian
CVE-2025-10534: firefox - Spoofing issue in the Site Permissions component. This vulnerability affects Fir...
vendor_debian·2025·CVSS 8.1
CVE-2025-10534 [HIGH] CVE-2025-10534: firefox - Spoofing issue in the Site Permissions component. This vulnerability affects Fir...
Spoofing issue in the Site Permissions component. This vulnerability affects Firefox < 143 and Thunderbird < 143.
Scope: local
sid: resolved (fixed in 143.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-73: CVE-2025-10534
vendor_mozilla·CVSS 8.1
CVE-2025-10534 [HIGH] Mozilla Foundation Security Advisory 2025-73: CVE-2025-10534
Mozilla Foundation Security Advisory 2025-73
CVE: CVE-2025-10534
Product: Firefox
Impact: high
Fixed in: Firefox 143
Mozilla
Mozilla Foundation Security Advisory 2025-77: CVE-2025-10534
vendor_mozilla·CVSS 8.1
CVE-2025-10534 [HIGH] Mozilla Foundation Security Advisory 2025-77: CVE-2025-10534
Mozilla Foundation Security Advisory 2025-77
CVE: CVE-2025-10534
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 143
OSV
CVE-2025-10534: Spoofing issue in the Site Permissions component
osv·2025-09-16·CVSS 8.1
CVE-2025-10534 [HIGH] CVE-2025-10534: Spoofing issue in the Site Permissions component
Spoofing issue in the Site Permissions component. This vulnerability affects Firefox < 143 and Thunderbird < 143.
GHSA
GHSA-pww6-475j-f225: This vulnerability affects Firefox < 143 and Thunderbird < 143
ghsa_unreviewed·2025-09-16
CVE-2025-10534 [HIGH] CWE-79 GHSA-pww6-475j-f225: This vulnerability affects Firefox < 143 and Thunderbird < 143
This vulnerability affects Firefox < 143 and Thunderbird < 143.
No detection rules found.
No public exploits indexed.
2025-09-16
Published