CVE-2026-92045
published 2026-09-15CVE-2026-92045: Sandbox escape due to incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156…
PriorityP346critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.30%
21.1th percentile
Sandbox escape due to incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 156 | Firefox 156 |
| mozilla | firefox | < 153.3.0 | 153.3.0 |
| mozilla | firefox | >= 154.0.0 < 156.0.0 | 156.0.0 |
| mozilla | firefox_esr | < Firefox ESR 153.3 | Firefox ESR 153.3 |
| mozilla | thunderbird | < Thunderbird 153.3 | Thunderbird 153.3 |
| mozilla | thunderbird | < Thunderbird 156 | Thunderbird 156 |
| mozilla | thunderbird | < 153.3.0 | 153.3.0 |
| mozilla | thunderbird | >= 154.0 < 156.0 | 156.0 |
CVSS provenance
nvdv3.19.6CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vendor_redhat6.1MEDIUM
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Red Hat
firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the WebRTC component
vendor_redhat·2026-09-15·CVSS 6.1
CVE-2026-92045 [MEDIUM] CWE-653 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the WebRTC component
firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the WebRTC component
Sandbox escape due to incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Sandbox escape due to incorrect boundary conditions in the WebRTC component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterpris
Mozilla
Mozilla Foundation Security Advisory 2026-93: CVE-2026-92045
vendor_mozilla
CVE-2026-92045 Mozilla Foundation Security Advisory 2026-93: CVE-2026-92045
Mozilla Foundation Security Advisory 2026-93
CVE: CVE-2026-92045
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.3
Mozilla
Mozilla Foundation Security Advisory 2026-96: CVE-2026-92045
vendor_mozilla
CVE-2026-92045 Mozilla Foundation Security Advisory 2026-96: CVE-2026-92045
Mozilla Foundation Security Advisory 2026-96
CVE: CVE-2026-92045
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.3
Mozilla
Mozilla Foundation Security Advisory 2026-90: CVE-2026-92045
vendor_mozilla
CVE-2026-92045 Mozilla Foundation Security Advisory 2026-90: CVE-2026-92045
Mozilla Foundation Security Advisory 2026-90
CVE: CVE-2026-92045
Product: Firefox
Impact: low
Fixed in: Firefox 156
Mozilla
Mozilla Foundation Security Advisory 2026-94: CVE-2026-92045
vendor_mozilla
CVE-2026-92045 Mozilla Foundation Security Advisory 2026-94: CVE-2026-92045
Mozilla Foundation Security Advisory 2026-94
CVE: CVE-2026-92045
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 156
GHSA
Sandbox escape due to incorrect boundary conditions in the WebRTC component.
ghsa_unreviewed·2026-09-15
CVE-2026-92045 Sandbox escape due to incorrect boundary conditions in the WebRTC component.
Sandbox escape due to incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
No detection rules found.
No public exploits indexed.
2026-09-15
Published