CVE-2020-12417

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash. *Note: this issue only affects Firefox on ARM64 platforms.* This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-617 CWE-681 CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Jul 9, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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