Mozilla Firefox up to 145 Request cross-domain policy

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$5k-$25k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Mozilla Firefox up to 145. The affected element is an unknown function of the component Request Handler Component. The manipulation results in cross-domain policy. This vulnerability is cataloged as CVE-2025-14331. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Mozilla Firefox up to 145. Affected is an unknown functionality of the component Request Handler Component. The manipulation with an unknown input leads to a cross-domain policy vulnerability. CWE is classifying the issue as CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. This is going to have an impact on integrity. CVE summarizes:

Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.

The advisory is available at bugzilla.mozilla.org. This vulnerability is traded as CVE-2025-14331 since 12/09/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 01/06/2026).

The vulnerability scanner Nessus provides a plugin with the ID 278145 (RHEL 9 : firefox (RHSA-2025:23034)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 146 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (278145) and CERT Bund (WID-SEC-2025-2812). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

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

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Cross-domain policy
CWE: CWE-942 / CWE-346 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 278145
Nessus Name: RHEL 9 : firefox (RHSA-2025:23034)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Firefox 146

Timelineinfo

12/09/2025 Advisory disclosed
12/09/2025 +0 days CVE reserved
12/09/2025 +0 days VulDB entry created
01/06/2026 +28 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2025-14331 (🔒)
GCVE (CVE): GCVE-0-2025-14331
GCVE (VulDB): GCVE-100-335154
CERT Bund: WID-SEC-2025-2812 - Mozilla Firefox: Mehrere Schwachstellen

Entryinfo

Created: 12/09/2025 14:58
Updated: 01/06/2026 14:40
Changes: 12/09/2025 14:58 (55), 12/10/2025 16:34 (1), 12/10/2025 17:54 (7), 12/11/2025 05:44 (2), 12/11/2025 08:57 (11), 12/12/2025 10:55 (1), 01/04/2026 23:58 (1), 01/06/2026 14:40 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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