CVE-2026-74985
published 2026-08-18CVE-2026-74985: Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird…
PriorityP353critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.31%
23.1th percentile
Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 154 | Firefox 154 |
| mozilla | firefox | < 153.1.0 | 153.1.0 |
| mozilla | firefox_esr | < Firefox ESR 153.1 | Firefox ESR 153.1 |
| mozilla | thunderbird | < Thunderbird 154 | Thunderbird 154 |
| mozilla | thunderbird | < Thunderbird 153.1 | Thunderbird 153.1 |
| mozilla | thunderbird | < 153.1.0 | 153.1.0 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_redhat9.8CRITICAL
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Red Hat
firefox: thunderbird: Privilege escalation in the Enterprise Policies component
vendor_redhat·2026-08-18·CVSS 9.8
CVE-2026-74985 [CRITICAL] CWE-266 firefox: thunderbird: Privilege escalation in the Enterprise Policies component
firefox: thunderbird: Privilege escalation in the Enterprise Policies component
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Privilege escalation in the Enterprise Policies 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 affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: thunderbird (Red Hat Enterprise Linux 6) - Not affec
Mozilla
Mozilla Foundation Security Advisory 2026-77: CVE-2026-74985
vendor_mozilla
CVE-2026-74985 Mozilla Foundation Security Advisory 2026-77: CVE-2026-74985
Mozilla Foundation Security Advisory 2026-77
CVE: CVE-2026-74985
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 153.1
Mozilla
Mozilla Foundation Security Advisory 2026-78: CVE-2026-74985
vendor_mozilla
CVE-2026-74985 Mozilla Foundation Security Advisory 2026-78: CVE-2026-74985
Mozilla Foundation Security Advisory 2026-78
CVE: CVE-2026-74985
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 154
Mozilla
Mozilla Foundation Security Advisory 2026-80: CVE-2026-74985
vendor_mozilla
CVE-2026-74985 Mozilla Foundation Security Advisory 2026-80: CVE-2026-74985
Mozilla Foundation Security Advisory 2026-80
CVE: CVE-2026-74985
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153.1
Mozilla
Mozilla Foundation Security Advisory 2026-74: CVE-2026-74985
vendor_mozilla
CVE-2026-74985 Mozilla Foundation Security Advisory 2026-74: CVE-2026-74985
Mozilla Foundation Security Advisory 2026-74
CVE: CVE-2026-74985
Product: Firefox
Impact: high
Fixed in: Firefox 154
GHSA
Privilege escalation in the Enterprise Policies component.
ghsa_unreviewed·2026-08-18
CVE-2026-74985 Privilege escalation in the Enterprise Policies component.
Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
No detection rules found.
No public exploits indexed.
2026-08-18
Published