CVE-2026-109707
published 2026-10-13CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and…
PriorityP349critical9.6CVSS 3.1
AVNACLPRNUIRSCCHIHAH
EPSS
0.31%
22.5th percentile
Sandbox escape due to use-after-free 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 153.5 | Thunderbird 153.5 |
| mozilla | thunderbird | < Thunderbird 158 | Thunderbird 158 |
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GHSA
Sandbox escape due to use-after-free in the Networking component.
ghsa_unreviewed·2026-10-13
CVE-2026-109707 [CRITICAL] CWE-416 Sandbox escape due to use-after-free in the Networking component.
Sandbox escape due to use-after-free in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
Mozilla
Mozilla Foundation Security Advisory 2026-110: CVE-2026-109707
vendor_mozilla·CVSS 9.6
CVE-2026-109707 [CRITICAL] Mozilla Foundation Security Advisory 2026-110: CVE-2026-109707
Mozilla Foundation Security Advisory 2026-110
CVE: CVE-2026-109707
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.5
Mozilla
Mozilla Foundation Security Advisory 2026-109: CVE-2026-109707
vendor_mozilla·CVSS 9.6
CVE-2026-109707 [CRITICAL] Mozilla Foundation Security Advisory 2026-109: CVE-2026-109707
Mozilla Foundation Security Advisory 2026-109
CVE: CVE-2026-109707
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 158
Mozilla
Mozilla Foundation Security Advisory 2026-108: CVE-2026-109707
vendor_mozilla·CVSS 9.6
CVE-2026-109707 [CRITICAL] Mozilla Foundation Security Advisory 2026-108: CVE-2026-109707
Mozilla Foundation Security Advisory 2026-108
CVE: CVE-2026-109707
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.5
Mozilla
Mozilla Foundation Security Advisory 2026-106: CVE-2026-109707
vendor_mozilla·CVSS 9.6
CVE-2026-109707 [CRITICAL] Mozilla Foundation Security Advisory 2026-106: CVE-2026-109707
Mozilla Foundation Security Advisory 2026-106
CVE: CVE-2026-109707
Product: Firefox
Impact: low
Fixed in: Firefox 158
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-10-13
Published