CVE-2026-74947
published 2026-08-18CVE-2026-74947: Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and…
PriorityP345high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.24%
15.5th percentile
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 154 | Firefox 154 |
| mozilla | firefox | < 153.1.0 | 153.1.0 |
| mozilla | firefox | < 154.0.0 | 154.0.0 |
| 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 |
| mozilla | thunderbird | < 154.0 | 154.0 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_redhat8.8HIGH
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VulDB
Mozilla Firefox prior 153.1/154 Graphics privileges management (Nessus ID 338150)
vuldb·2026-08-23·CVSS 8.8
CVE-2026-74947 [HIGH] Mozilla Firefox prior 153.1/154 Graphics privileges management (Nessus ID 338150)
A vulnerability, which was classified as critical, has been found in Mozilla Firefox. The affected element is an unknown function of the component Graphics. The manipulation leads to improper privilege management.
This vulnerability is referenced as CVE-2026-74947. Remote exploitation of the attack is possible. No exploit is available.
It is advisable to upgrade the affected component.
GHSA
Privilege escalation due to invalid pointer in the Graphics component.
ghsa_unreviewed·2026-08-18
CVE-2026-74947 [HIGH] CWE-763 Privilege escalation due to invalid pointer in the Graphics component.
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
Red Hat
firefox: thunderbird: Privilege escalation due to invalid pointer in the Graphics component
vendor_redhat·2026-08-18·CVSS 8.8
CVE-2026-74947 [HIGH] CWE-825 firefox: thunderbird: Privilege escalation due to invalid pointer in the Graphics component
firefox: thunderbird: Privilege escalation due to invalid pointer in the Graphics component
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Privilege escalation due to invalid pointer in the Graphics 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 Enterpr
Mozilla
Mozilla Foundation Security Advisory 2026-78: CVE-2026-74947
vendor_mozilla
CVE-2026-74947 Mozilla Foundation Security Advisory 2026-78: CVE-2026-74947
Mozilla Foundation Security Advisory 2026-78
CVE: CVE-2026-74947
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 154
Mozilla
Mozilla Foundation Security Advisory 2026-77: CVE-2026-74947
vendor_mozilla
CVE-2026-74947 Mozilla Foundation Security Advisory 2026-77: CVE-2026-74947
Mozilla Foundation Security Advisory 2026-77
CVE: CVE-2026-74947
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 153.1
Mozilla
Mozilla Foundation Security Advisory 2026-74: CVE-2026-74947
vendor_mozilla
CVE-2026-74947 Mozilla Foundation Security Advisory 2026-74: CVE-2026-74947
Mozilla Foundation Security Advisory 2026-74
CVE: CVE-2026-74947
Product: Firefox
Impact: high
Fixed in: Firefox 154
Mozilla
Mozilla Foundation Security Advisory 2026-80: CVE-2026-74947
vendor_mozilla
CVE-2026-74947 Mozilla Foundation Security Advisory 2026-80: CVE-2026-74947
Mozilla Foundation Security Advisory 2026-80
CVE: CVE-2026-74947
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153.1
No detection rules found.
No public exploits indexed.
2026-08-18
Published