CVE-2017-7813

HighCVSS 8.2/10Last modified Jun 17, 2026

Description

Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.

Metrics

CVSS 3.0 8.2/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Weakness enumeration

CWE-125CWE-704

Affected software

No affected versions have been published.

Timeline

Published
Jun 11, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2017-7813: High severity, CVSS 8.2 | Vulnix