Description
JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
Published: 2026-06-16
Score: 5.4 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

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History

Tue, 16 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Description JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152. JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
References

Tue, 16 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-670
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 16 Jun 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 16 Jun 2026 13:15:00 +0000

Type Values Removed Values Added
Description JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152.
Title JIT miscompilation in the JavaScript: WebAssembly component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-06-16T16:08:42.470Z

Reserved: 2026-06-15T15:08:19.456Z

Link: CVE-2026-12321

cve-icon Vulnrichment

Updated: 2026-06-16T15:11:27.444Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-06-16T13:16:32.823

Modified: 2026-06-16T17:16:37.307

Link: CVE-2026-12321

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-16T14:45:15Z

Weaknesses
  • CWE-670

    Always-Incorrect Control Flow Implementation