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NVD Vulnerability Details :
CVE-2025-14321
Modified
More InfoOfficial Page
Source-security@mozilla.org
View Known Exploited Vulnerability (KEV) details
Published At-09 Dec, 2025 | 16:17
Updated At-13 Apr, 2026 | 15:16

Use-after-free in the WebRTC: Signaling component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Secondary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches
Mozilla Corporation
mozilla
>>firefox>>Versions before 140.6.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>firefox>>Versions before 146.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions before 140.6.0(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Mozilla Corporation
mozilla
>>thunderbird>>Versions before 146.0(exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Weaknesses
CWE IDTypeSource
CWE-416Primarynvd@nist.gov
CWE-416Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-416
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-416
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1992760security@mozilla.org
Issue Tracking
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-92/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-94/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-95/security@mozilla.org
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-96/security@mozilla.org
Vendor Advisory
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1992760
Source: security@mozilla.org
Resource:
Issue Tracking
Permissions Required
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-92/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-94/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-95/
Source: security@mozilla.org
Resource:
Vendor Advisory
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-96/
Source: security@mozilla.org
Resource:
Vendor Advisory
Change History
0Changes found
Details not found