CVE-2026-92075
published 2026-09-15CVE-2026-92075: Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
PriorityP351critical9.1CVSS 3.1
AVNACLPRNUINSUCHIHAN
EPSS
0.32%
23.3th percentile
Mitigation bypass in the Networking 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 156 | Thunderbird 156 |
| mozilla | thunderbird | < Thunderbird 153.3 | Thunderbird 153.3 |
| mozilla | thunderbird | < 153.3.0 | 153.3.0 |
| mozilla | thunderbird | >= 154.0 < 156.0 | 156.0 |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
vendor_redhat3.4LOW
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Red Hat
firefox: thunderbird: Mitigation bypass in the Networking component
vendor_redhat·2026-09-15·CVSS 3.4
CVE-2026-92075 [LOW] CWE-305 firefox: thunderbird: Mitigation bypass in the Networking component
firefox: thunderbird: Mitigation bypass in the Networking component
Mitigation bypass in the Networking 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:
Mitigation bypass in the Networking 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 Enterprise Linux 10) - Not affected
Package: thunderbird (Red Hat Enterprise Linux 10) - Not affec
Mozilla
Mozilla Foundation Security Advisory 2026-94: CVE-2026-92075
vendor_mozilla
CVE-2026-92075 Mozilla Foundation Security Advisory 2026-94: CVE-2026-92075
Mozilla Foundation Security Advisory 2026-94
CVE: CVE-2026-92075
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 156
Mozilla
Mozilla Foundation Security Advisory 2026-93: CVE-2026-92075
vendor_mozilla
CVE-2026-92075 Mozilla Foundation Security Advisory 2026-93: CVE-2026-92075
Mozilla Foundation Security Advisory 2026-93
CVE: CVE-2026-92075
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.3
Mozilla
Mozilla Foundation Security Advisory 2026-96: CVE-2026-92075
vendor_mozilla
CVE-2026-92075 Mozilla Foundation Security Advisory 2026-96: CVE-2026-92075
Mozilla Foundation Security Advisory 2026-96
CVE: CVE-2026-92075
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.3
Mozilla
Mozilla Foundation Security Advisory 2026-90: CVE-2026-92075
vendor_mozilla
CVE-2026-92075 Mozilla Foundation Security Advisory 2026-90: CVE-2026-92075
Mozilla Foundation Security Advisory 2026-90
CVE: CVE-2026-92075
Product: Firefox
Impact: low
Fixed in: Firefox 156
GHSA
Mitigation bypass in the Networking component.
ghsa_unreviewed·2026-09-15
CVE-2026-92075 Mitigation bypass in the Networking component.
Mitigation bypass in the Networking 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