CVE-2026-109708
published 2026-10-13CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird…
PriorityP348critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.32%
23.5th percentile
Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 158 | Firefox 158 |
| mozilla | firefox_esr | < Firefox ESR 153.5 | Firefox ESR 153.5 |
| mozilla | thunderbird | < Thunderbird 158 | Thunderbird 158 |
| mozilla | thunderbird | < Thunderbird 153.5 | Thunderbird 153.5 |
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Mozilla
Mozilla Foundation Security Advisory 2026-109: CVE-2026-109708
vendor_mozilla
CVE-2026-109708 Mozilla Foundation Security Advisory 2026-109: CVE-2026-109708
Mozilla Foundation Security Advisory 2026-109
CVE: CVE-2026-109708
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 158
Mozilla
Mozilla Foundation Security Advisory 2026-108: CVE-2026-109708
vendor_mozilla
CVE-2026-109708 Mozilla Foundation Security Advisory 2026-108: CVE-2026-109708
Mozilla Foundation Security Advisory 2026-108
CVE: CVE-2026-109708
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.5
Mozilla
Mozilla Foundation Security Advisory 2026-110: CVE-2026-109708
vendor_mozilla
CVE-2026-109708 Mozilla Foundation Security Advisory 2026-110: CVE-2026-109708
Mozilla Foundation Security Advisory 2026-110
CVE: CVE-2026-109708
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.5
Mozilla
Mozilla Foundation Security Advisory 2026-106: CVE-2026-109708
vendor_mozilla
CVE-2026-109708 Mozilla Foundation Security Advisory 2026-106: CVE-2026-109708
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109708
Product: Firefox
Impact: low
Fixed in: Firefox 158
GHSA
Sandbox escape due to incorrect boundary conditions in the Networking component.
ghsa_unreviewed·2026-10-13
CVE-2026-109708 Sandbox escape due to incorrect boundary conditions in the Networking component.
Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-10-13
Published