CVE-2025-14323
published 2025-12-09CVE-2025-14323: Privilege escalation in the DOM: Notifications component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146…
PriorityP346high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.35%
27.3th percentile
Privilege escalation in the DOM: Notifications component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Affected
17 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 | < 115.31.0 | 115.31.0 |
| mozilla | firefox | < 146.0 | 146.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 116.0 < 140.6.0 | 140.6.0 |
| mozilla | thunderbird | < 140.6.0 | 140.6.0 |
| mozilla | thunderbird | < 146.0 | 146.0 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1~deb11u1 | 1:140.6.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1~deb12u1 | 1:140.6.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1~deb13u1 | 1:140.6.0esr-1~deb13u1 |
| mozilla | thunderbird | >= 0 < 1:140.6.0esr-1 | 1:140.6.0esr-1 |
| msrc | azl3_samba_4.18.3-1_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_samba_4.12.5-6_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_msrc5.5MEDIUM
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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: thunderbird: Privilege escalation in the DOM: Notifications component
vendor_redhat·2025-12-09·CVSS 8.8
CVE-2025-14323 [HIGH] firefox: thunderbird: Privilege escalation in the DOM: Notifications component
firefox: thunderbird: Privilege escalation in the DOM: Notifications component
Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the DOM: Notifications 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
Pack
Debian
CVE-2025-14323: firefox - Privilege escalation in the DOM: Notifications component. This vulnerability aff...
vendor_debian·2025·CVSS 8.8
CVE-2025-14323 [HIGH] CVE-2025-14323: firefox - Privilege escalation in the DOM: Notifications component. This vulnerability aff...
Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
Scope: local
sid: resolved (fixed in 146.0-1)
Microsoft
A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15 before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing d
vendor_msrc·2020-10-13·CVSS 5.5
CVE-2020-14323 [MEDIUM] CWE-476 A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15 before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing d
A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15 before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, w
Mozilla
Mozilla Foundation Security Advisory 2025-95: CVE-2025-14323
vendor_mozilla·CVSS 8.8
CVE-2025-14323 [HIGH] Mozilla Foundation Security Advisory 2025-95: CVE-2025-14323
Mozilla Foundation Security Advisory 2025-95
CVE: CVE-2025-14323
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 146
Mozilla
Mozilla Foundation Security Advisory 2025-96: CVE-2025-14323
vendor_mozilla·CVSS 8.8
CVE-2025-14323 [HIGH] Mozilla Foundation Security Advisory 2025-96: CVE-2025-14323
Mozilla Foundation Security Advisory 2025-96
CVE: CVE-2025-14323
Product: Thunderbird
Impact: moderate
Fixed in: Thunderbird 140.6
Mozilla
Mozilla Foundation Security Advisory 2025-93: CVE-2025-14323
vendor_mozilla·CVSS 8.8
CVE-2025-14323 [HIGH] Mozilla Foundation Security Advisory 2025-93: CVE-2025-14323
Mozilla Foundation Security Advisory 2025-93
CVE: CVE-2025-14323
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 115.31
Mozilla
Mozilla Foundation Security Advisory 2025-92: CVE-2025-14323
vendor_mozilla·CVSS 8.8
CVE-2025-14323 [HIGH] Mozilla Foundation Security Advisory 2025-92: CVE-2025-14323
Mozilla Foundation Security Advisory 2025-92
CVE: CVE-2025-14323
Product: Firefox
Impact: moderate
Fixed in: Firefox 146
Mozilla
Mozilla Foundation Security Advisory 2025-94: CVE-2025-14323
vendor_mozilla·CVSS 8.8
CVE-2025-14323 [HIGH] Mozilla Foundation Security Advisory 2025-94: CVE-2025-14323
Mozilla Foundation Security Advisory 2025-94
CVE: CVE-2025-14323
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 140.6
VulDB
Mozilla Firefox up to 145 DOM Notifications Remote Code Execution (Nessus ID 278145 / WID-SEC-2025-2812)
vuldb·2026-06-12·CVSS 8.8
CVE-2025-14323 [HIGH] Mozilla Firefox up to 145 DOM Notifications Remote Code Execution (Nessus ID 278145 / WID-SEC-2025-2812)
A vulnerability marked as critical has been reported in Mozilla Firefox up to 145. The affected element is an unknown function of the component DOM Notifications Component. This manipulation causes Remote Code Execution.
This vulnerability appears as CVE-2025-14323. The attack may be initiated remotely. There is no available exploit.
It is suggested to upgrade the affected component.
GHSA
GHSA-24pp-jv4q-cp8j: Privilege escalation in the DOM: Notifications component
ghsa_unreviewed·2025-12-09
CVE-2025-14323 [HIGH] GHSA-24pp-jv4q-cp8j: Privilege escalation in the DOM: Notifications component
Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.
OSV
CVE-2025-14323: Privilege escalation in the DOM: Notifications component
osv·2025-12-09·CVSS 8.8
CVE-2025-14323 [HIGH] CVE-2025-14323: Privilege escalation in the DOM: Notifications component
Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-14323 firefox: thunderbird: Privilege escalation in the DOM: Notifications component
bugzilla·2025-12-09·CVSS 8.8
CVE-2025-14323 [HIGH] CVE-2025-14323 firefox: thunderbird: Privilege escalation in the DOM: Notifications component
CVE-2025-14323 firefox: thunderbird: Privilege escalation in the DOM: Notifications component
Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 10
Via RHSA-2025:23035 https://access.redhat.com/errata/RHSA-2025:23035
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2025:23034 https://access.redhat.com/errata/RHSA-2025:23034
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2025:23128 https://access.redhat.com/errata/RHSA-2025:23128
---
This issue has been addressed in the following products:
Re
Wiz
CVE-2025-14323 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.8
CVE-2025-14323 [HIGH] CVE-2025-14323 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-14323 :
NixOS vulnerability analysis and mitigation
Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
Source : NVD
## 8.8
Score
Published December 9, 2025
Severity HIGH
CNA Score 8.8
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) 16.7
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
MozillaThunderbird-translations-other
rhel10::thunderbird-flatpak
Sources
AlmaLinux 8 Severity HIGH Has Fix Added at: Dec 12, 2025
AlmaLinux 9 Severity HIGH Has Fix Added at: Dec 12, 2025
https://bugzilla.mozilla.org/show_bug.cgi?id=1996555https://www.mozilla.org/security/advisories/mfsa2025-92/https://www.mozilla.org/security/advisories/mfsa2025-93/https://www.mozilla.org/security/advisories/mfsa2025-94/https://www.mozilla.org/security/advisories/mfsa2025-95/https://www.mozilla.org/security/advisories/mfsa2025-96/
2025-12-09
Published