CVE-2016-5261

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CVSS 3.0

8.8 high

EPSS

4%p90

Published

Aug 5, 2016 (Aug 5, 2016)

Modified

Jun 17, 2026

Description

Integer overflow in the WebSocketChannel class in the WebSockets subsystem in Mozilla Firefox before 48.0 and Firefox ESR < 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted packets that trigger incorrect buffer-resize operations during buffering.

Vendors: mozilla
Products: firefox
Weakness: CWE-190
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (4.2%)

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