Access of Uninitialized Pointer in Mozilla products - CVE-2026-74947
Published: August 18, 2026
Vulnerability identifier: #VU144078
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74947
CWE-ID: CWE-824
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to escalate privileges.
The vulnerability exists due to an invalid pointer in the Graphics component when rendering crafted web content. A remote attacker can cause the victim to visit a specially crafted website to escalate privileges.
User interaction is required to visit a crafted website or URL.
Affected software
Firefox for Android
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Firefox ESR
How to mitigate CVE-2026-74947
Install security update from vendor's website.
Firefox for Android - update to 154.0
Mozilla Firefox - update to 154.0
Firefox ESR - update to 153.1.0
Mozilla Firefox - update to 154.0
Firefox ESR - update to 153.1.0