CVE-2025-14327
published 2025-12-09CVE-2025-14327: Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
EPSS
0.35%
27.4th percentile
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
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 146.0-1 (sid) | firefox 146.0-1 (sid) |
| debian | firefox-esr | < firefox 146.0-1 (sid) | firefox 146.0-1 (sid) |
| debian | thunderbird | < firefox 146.0-1 (sid) | firefox 146.0-1 (sid) |
| mozilla | firefox | < 146.0 | 146.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 146.0 | 146.0 |
| mozilla | thunderbird | >= 0 < 1:140.7.0esr-1~deb11u1 | 1:140.7.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:140.7.0esr-1~deb12u1 | 1:140.7.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:140.7.0esr-1~deb13u1 | 1:140.7.0esr-1~deb13u1 |
| mozilla | thunderbird | >= 0 < 1:140.7.0esr-1 | 1:140.7.0esr-1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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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.
Red Hat
firefox: Spoofing issue in the Downloads Panel component
vendor_redhat·2025-12-09·CVSS 7.5
CVE-2025-14327 [HIGH] firefox: Spoofing issue in the Downloads Panel component
firefox: Spoofing issue in the Downloads Panel component
Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird < 140.7.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Spoofing issue in the Downloads Panel component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Package:
Debian
CVE-2025-14327: firefox - Spoofing issue in the Downloads Panel component. This vulnerability affects Fire...
vendor_debian·2025·CVSS 7.5
CVE-2025-14327 [HIGH] CVE-2025-14327: firefox - Spoofing issue in the Downloads Panel component. This vulnerability affects Fire...
Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird < 140.7.
Scope: local
sid: resolved (fixed in 146.0-1)
Mozilla
Mozilla Foundation Security Advisory 2026-03: CVE-2025-14327
vendor_mozilla·CVSS 7.5
CVE-2025-14327 [HIGH] Mozilla Foundation Security Advisory 2026-03: CVE-2025-14327
Mozilla Foundation Security Advisory 2026-03
CVE: CVE-2025-14327
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.7
Mozilla
Mozilla Foundation Security Advisory 2026-05: CVE-2025-14327
vendor_mozilla·CVSS 7.5
CVE-2025-14327 [HIGH] Mozilla Foundation Security Advisory 2026-05: CVE-2025-14327
Mozilla Foundation Security Advisory 2026-05
CVE: CVE-2025-14327
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.7
Mozilla
Mozilla Foundation Security Advisory 2025-92: CVE-2025-14327
vendor_mozilla·CVSS 7.5
CVE-2025-14327 [HIGH] Mozilla Foundation Security Advisory 2025-92: CVE-2025-14327
Mozilla Foundation Security Advisory 2025-92
CVE: CVE-2025-14327
Product: Firefox
Impact: moderate
Fixed in: Firefox 146
Mozilla
Mozilla Foundation Security Advisory 2025-95: CVE-2025-14327
vendor_mozilla·CVSS 7.5
CVE-2025-14327 [HIGH] Mozilla Foundation Security Advisory 2025-95: CVE-2025-14327
Mozilla Foundation Security Advisory 2025-95
CVE: CVE-2025-14327
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 146
OSV
CVE-2025-14327: Spoofing issue in the Downloads Panel component
osv·2025-12-09·CVSS 7.5
CVE-2025-14327 [HIGH] CVE-2025-14327: Spoofing issue in the Downloads Panel component
Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird < 140.7.
GHSA
GHSA-wqgj-c38v-hpmm: Spoofing issue in the Downloads Panel component
ghsa_unreviewed·2025-12-09
CVE-2025-14327 [HIGH] CWE-290 GHSA-wqgj-c38v-hpmm: Spoofing issue in the Downloads Panel component
Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-14327 firefox: Spoofing issue in the Downloads Panel component
bugzilla·2025-12-09·CVSS 7.5
CVE-2025-14327 [HIGH] CVE-2025-14327 firefox: Spoofing issue in the Downloads Panel component
CVE-2025-14327 firefox: Spoofing issue in the Downloads Panel component
Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2026:0667 https://access.redhat.com/errata/RHSA-2026:0667
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2026:0694 https://access.redhat.com/errata/RHSA-2026:0694
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2026:0924 https://access.redhat.com/errata/RHSA-2026:0924
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9.6 Extended Update Support
Via RHSA-2026:1320 https://access
Wiz
CVE-2025-14327 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.5
CVE-2025-14327 [HIGH] CVE-2025-14327 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-14327 :
NixOS vulnerability analysis and mitigation
Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird < 140.7.
Source : NVD
## 7.5
Score
Published December 9, 2025
Severity HIGH
CNA Score 7.5
Affected Technologies
NixOS
Mozilla Firefox
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 2.7
Exploitation Probability (EPSS) N/A
Affected packages and libraries
rhel10::firefox-flatpak.src
firefox-debuginfo
Sources
AlmaLinux 8 Severity HIGH Has Fix Added at: Feb 11, 2026
AlmaLinux 9 Severity HIGH Has Fix Added at: Jan 20, 2026
Debian 11, 12, 13, 14 Severity HIGH Has Fix Added at
2025-12-09
Published