CVSS 3.0
9.1 criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HCVE-2018-12387
A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.
Severity
- EPSS
- 9.6% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- mozilla:firefox
- redhat:enterprise_linux_desktop
- redhat:enterprise_linux_server
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_eus
- redhat:enterprise_linux_server_tus
- redhat:enterprise_linux_workstation