Use After Free in Mozilla Firefox

CVE-2018-12377

A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances during shutdown when the timer is deleted while still in use. This results in a potentially exploitable crash. This vulnerability affec…

Vulnerability class: Use-After-Free

EPSS: 0.034 (87.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-12377?
CVE-2018-12377 is a critical-severity vulnerability in Mozilla Firefox, classified under Use After Free. CVSS score: 9.8/10. Published 2018-10-18.
How severe is CVE-2018-12377?
Critical severity. CVSS v3 base score is 9.8 out of 10.