Buffer overflow in Mozilla products - CVE-2026-100814
Published: September 29, 2026
Vulnerability identifier: #VU152861
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-100814
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to crash the browser.
The vulnerability exists due to a boundary error in the JavaScript Engine: JIT. A remote attacker can trigger memory corruption and crash the browser.
Affected software
Mozilla Firefox
Firefox ESR
Firefox for Android
Firefox ESR
Firefox for Android
How to mitigate CVE-2026-100814
Install updates from vendor's website.
Mozilla Firefox - update to 157.0
Firefox for Android - update to 157.0
Firefox ESR - update to 153.4.0
Firefox for Android - update to 157.0
Firefox ESR - update to 153.4.0