CVE-2025-13015: Spoofing issue in Firefox

Published Nov 11, 2025
·
Updated

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

Other sources

Spoofing issue in Firefox. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, and Firefox ESR 115.30.

MITRE

Affected Software

10 affected componentsFixes available
Mozilla Firefox<145
Mozilla Firefox ESR<140.5, <115.30
Mozilla Firefox ESR<140.5
140.5
Mozilla Firefox<145
145
Mozilla Firefox ESR<115.30
115.30
Mozilla Thunderbird<145
145
Mozilla Thunderbird<140.5
140.5
Mozilla Firefox<115.30.0
Mozilla Firefox<145.0
Mozilla Firefox>=140.0<140.5.0

Event History

Nov 11, 2025
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Updated
via Mozilla·12:00 AM
Affected Software
CVE Published
via MITRE·03:47 PM
Data Sourced
via MITRE·03:47 PM
Description
Data Sourced
via Red Hat·04:02 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeaknessAffected Software
Nov 12, 2025
Updated
via Mozilla·12:00 AM
Affected Software
Nov 13, 2025
Updated
via Mozilla·12:00 AM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-13015?

CVE-2025-13015 is classified as a moderate severity spoofing vulnerability in Firefox.

2

How do I fix CVE-2025-13015?

To fix CVE-2025-13015, upgrade to Firefox version 145 or later, or Firefox ESR version 140.5 or later, or Firefox ESR version 115.30 or later.

3

What versions of Firefox are affected by CVE-2025-13015?

CVE-2025-13015 affects Firefox versions earlier than 145 and Firefox ESR versions earlier than 140.5 and 115.30.

4

Can CVE-2025-13015 lead to data theft?

Yes, CVE-2025-13015 could potentially be exploited to perform spoofing attacks, which may lead to data theft.

5

Is CVE-2025-13015 related to any other vulnerabilities?

CVE-2025-13015 may be related to other vulnerabilities affecting Mozilla products but needs to be assessed individually.

Contact

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