Use of uninitialized resource in Mozilla products - CVE-2026-117952
Published: October 27, 2026
Vulnerability identifier: #VU158131
CSH Severity: Medium
CVSS v4: 5.1 [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]
CVE-ID: CVE-2026-117952
CWE-ID: CWE-908
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to potentially disclose sensitive information or disrupt browser operation.
The vulnerability exists due to use of uninitialized memory in the networking component when processing network-related input. A remote attacker can supply crafted input to trigger use of indeterminate memory contents, potentially exposing residual information or causing incorrect processing.
Affected software
Mozilla Firefox
Firefox ESR
Firefox for Android
Firefox ESR
Firefox for Android
How to mitigate CVE-2026-117952
Install security update from vendor's website.
Mozilla Firefox - update to 159.0
Firefox for Android - update to 159.0
Firefox ESR - addressed in versions 115.44.0, 153.6.0
Firefox for Android - update to 159.0
Firefox ESR - addressed in versions 115.44.0, 153.6.0