CVE-2025-14327: Spoofing issue in the Downloads Panel component

Published Dec 9, 2025
·
Updated

Spoofing issue in the Downloads Panel component. This vulnerability affects Firefox < 146.

Other sources

Spoofing issue in the Downloads Panel component. This vulnerability was fixed in Firefox 146, Thunderbird 146, Firefox ESR 140.7, and Thunderbird 140.7.

— MITRE

Affected Software

7 affected componentsFixes available
Mozilla Firefox<146
Mozilla Firefox<146
146
Mozilla Thunderbird<146
146
Mozilla Firefox ESR<140.7
140.7
Mozilla Firefox<146.0
Mozilla Thunderbird<146.0
Mozilla Thunderbird<140.7
140.7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 146
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 140.7
  3. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 146
  4. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 146
  5. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 140.7
  6. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 140.7

Event History

Dec 9, 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·01:38 PM
Data Sourced
via MITRE·01:38 PM
Description
Data Sourced
via Red Hat·02:01 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:17 PM
DescriptionSeverityWeaknessAffected Software
Jan 13, 2026
Updated
via Mozilla·12:00 AM
Affected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2025-14327?

CVE-2025-14327 is categorized as a spoofing vulnerability.

2

How do I fix CVE-2025-14327?

To fix CVE-2025-14327, update your Firefox browser to version 146 or later.

3

What versions of Firefox are affected by CVE-2025-14327?

CVE-2025-14327 affects all versions of Firefox prior to version 146.

4

What is the impact of CVE-2025-14327?

The impact of CVE-2025-14327 is that it may allow attackers to spoof content in the Downloads Panel.

5

Where can I find more information about CVE-2025-14327?

More information about CVE-2025-14327 can be found on the Mozilla security advisories page.

Company

Resources

Contact

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