CVE-2026-4717
CRITICAL
9.8
CVSS 3.1
Description
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Metadata
Severity & Metrics
9.8
CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Mozilla | Firefox | — | 140.9 ≤ 140.*, 149 ≤ * |
| Mozilla | Thunderbird | — | 140.9 ≤ 140.*, 149 ≤ * |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| — | adp | CWE-noinfo Not enough information |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 9.8 | CRITICAL | 3.1 | adp | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (5)