VDB-331923 · CVE-2025-13015 · EUVD-2025-84334

Mozilla Firefox up to 144 authentication spoofing

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Mozilla Firefox up to 144. This impacts an unknown function. Performing a manipulation results in Remote Code Execution. This vulnerability was named CVE-2025-13015. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 144. This affects an unknown code. The manipulation with an unknown input leads to a remote code execution vulnerability. CWE is classifying the issue as CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Spoofing issue in Firefox. This vulnerability affects Firefox < 145, Firefox ESR < 140.5, Firefox ESR < 115.30, Thunderbird < 145, and Thunderbird < 140.5.

It is possible to read the advisory at bugzilla.mozilla.org. This vulnerability is uniquely identified as CVE-2025-13015 since 11/11/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/12/2026).

The vulnerability scanner Nessus provides a plugin with the ID 275175 (RHEL 9 : firefox (RHSA-2025:21121)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 145 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (275175), EUVD (EUVD-2025-84334) and CERT Bund (WID-SEC-2025-2566). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
SUSE openSUSE
RESF Rocky Linux
IGEL OS
Mozilla Firefox ESR
Mozilla Firefox
Mozilla Thunderbird

Productinfo

Type

Web Browser

Vendor

Mozilla

Name

Firefox

Version

License

open-source

Website

Vendor: https://www.mozilla.org/
Product: https://www.mozilla.org/en-US/firefox/

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication spoofing
CWE: CWE-290 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 275175
Nessus Name: RHEL 9 : firefox (RHSA-2025:21121)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Firefox 145

Timelineinfo

11/11/2025 Advisory disclosed
11/11/2025 +0 days CVE reserved
11/11/2025 +0 days VulDB entry created
06/12/2026 +213 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2025-13015 (🔒)
GCVE (CVE): GCVE-0-2025-13015
GCVE (VulDB): GCVE-100-331923
EUVD: 🔒
CERT Bund: WID-SEC-2025-2566 - Mozilla Firefox und Firefox ESR: Mehrere Schwachstellen

Entryinfo

Created: 11/11/2025 18:58
Updated: 06/12/2026 05:01
Changes: 11/11/2025 18:58 (53), 11/12/2025 15:29 (7), 11/13/2025 06:14 (2), 11/13/2025 17:52 (2), 11/14/2025 05:54 (1), 11/17/2025 21:56 (1), 11/20/2025 05:59 (1), 11/21/2025 16:45 (1), 11/25/2025 17:24 (1), 12/01/2025 10:38 (1), 01/07/2026 04:01 (1), 06/12/2026 05:01 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.