Cryptographic issues in Mozilla products - CVE-2026-117957
Published: October 27, 2026
Vulnerability identifier: #VU158169
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-117957
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to potentially compromise the protection of WebRTC communications.
The vulnerability exists due to a cryptographic weakness in the WebRTC: Networking component when protecting communications. A remote attacker can exploit the cryptographic defect to potentially undermine communication confidentiality or integrity.
Affected software
Firefox ESR
Mozilla Firefox
Firefox for Android
Mozilla Firefox
Firefox for Android
How to mitigate CVE-2026-117957
Install security update from vendor's website.
Firefox ESR - update to 153.6.0
Firefox for Android - update to 159.0
Mozilla Firefox - update to 159.0
Firefox for Android - update to 159.0
Mozilla Firefox - update to 159.0