Vulnerability · Published Dec 9, 2025 · Assigned by mozilla
CVE-2025-14327Spoofing issue in the Downloads Panel component
High 7.5
In plain English
A high-severity authentication bypass by spoofing in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 68.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | firefox | 140.7.0-1.el10_1 | ALSA-2026:2271 |
| AlmaLinux:8 | firefox | 140.7.0-1.el8_10.alma.1 | ALSA-2026:0667 |
| AlmaLinux:9 | firefox | 140.7.0-1.el9_7.alma.1 | ALSA-2026:0694 |
| AlmaLinux:9 | firefox-x11 | 140.7.0-1.el9_7.alma.1 | ALSA-2026:0694 |
| AlmaLinux:10 | thunderbird | 140.7.0-1.el10_1.alma.1 | ALSA-2026:2286 |
| AlmaLinux:8 | thunderbird | 140.7.0-1.el8_10.alma.1 | ALSA-2026:2220 |
| AlmaLinux:9 | thunderbird | 140.7.0-1.el9_7.alma.1 | ALSA-2026:0924 |
| Debian:12 | firefox-esr | 140.7.0esr-1~deb12u1 | DEBIAN-CVE-2025-14327 |
| Debian:12 | firefox-esr | 140.7.0esr-1~deb12u1 | DSA-6101-1 |
| Debian:13 | firefox-esr | 140.7.0esr-1~deb13u1 | DEBIAN-CVE-2025-14327 |
| Debian:13 | firefox-esr | 140.7.0esr-1~deb13u1 | DSA-6101-1 |
| Debian:14 | firefox-esr | 140.7.0esr-1 | DEBIAN-CVE-2025-14327 |
| Debian:12 | thunderbird | 1:140.7.0esr-1~deb12u1 | DSA-6103-1 |
| Debian:12 | thunderbird | 1:140.7.0esr-1~deb12u1 | DEBIAN-CVE-2025-14327 |
| Debian:13 | thunderbird | 1:140.7.0esr-1~deb13u1 | DSA-6103-1 |
| Debian:13 | thunderbird | 1:140.7.0esr-1~deb13u1 | DEBIAN-CVE-2025-14327 |
| Debian:14 | thunderbird | 1:140.7.0esr-1 | DEBIAN-CVE-2025-14327 |
| Rocky Linux:8 | firefox | 0:140.7.0-1.el8_10 | RLSA-2026:0667 |
| Rocky Linux:9 | firefox | 0:140.7.0-1.el9_7 | RLSA-2026:0694 |
| Rocky Linux:8 | thunderbird | 0:140.7.0-1.el8_10 | RLSA-2026:2220 |
| Rocky Linux:9 | thunderbird | 0:140.7.0-1.el9_7 | RLSA-2026:0924 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2025-14327 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2025-14327 |
| Ubuntu:24.04:LTS | mozjs115 | no fix listed | UBUNTU-CVE-2025-14327 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2025-14327 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2025-14327 |
| Ubuntu:22.04:LTS | thunderbird | 1:140.7.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2025-14327 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | see references |
| Mozilla | Thunderbird | see references |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N