VDB
CVE-2026-7321
CVE-2026-7321
PUBLISHED
CVSS 9.600000381469727 CRITICAL
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox ESR 140.10.1.
EPSS 0.05% · 15.7th percentile
Risk Scores
CVSS v3.1
9.600000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Score
0.05%
15.7th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | 140.10.1 |
Timeline
- CVE Published
- Apr 28, 2026 PoC Published
- Apr 28, 2026 PoC Published
- Apr 29, 2026 EPSS Score
- Apr 30, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 19, 2026 Distribution Patch
- May 19, 2026 Security Advisory
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score