Out-of-bounds read in Mozilla Firefox and Firefox ESR - CVE-2025-10532
Published: September 17, 2025
Vulnerability identifier: #VU115731
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-10532
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Firefox ESR
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the JavaScript: GC component. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.
How to mitigate CVE-2025-10532
Install updates from vendor's website.