Buffer overflow in Mozilla Firefox

CVE-2020-12417

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 vulne…

EPSS: 0.027 (84.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-12417?
CVE-2020-12417 is a high-severity vulnerability in Mozilla Firefox, classified under Reachable Assertion. CVSS score: 8.8/10. Published 2020-07-09.
How severe is CVE-2020-12417?
High severity. CVSS v3 base score is 8.8 out of 10.