What is CVE-2020-12389?

CVE-2020-12389 is a critical-severity vulnerability in Microsoft Windows, classified under Improper Input Validation. CVSS score: 10.0/10. Published 2020-05-26.

How severe is CVE-2020-12389?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Improper input validation in Microsoft Windows

CVE-2020-12389

The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Fir…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.017 (75.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Microsoft Windows
Mozilla Firefox — versions unspecified
Mozilla Firefox Esr — versions unspecified
Mozilla Firefox_esr

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security@mozilla.org (x_refsource_MISC, Vendor Advisory)
security@mozilla.org (x_refsource_MISC, Vendor Advisory)
security@mozilla.org (Permissions Required, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-12389?: CVE-2020-12389 is a critical-severity vulnerability in Microsoft Windows, classified under Improper Input Validation. CVSS score: 10.0/10. Published 2020-05-26.
How severe is CVE-2020-12389?: Critical severity. CVSS v3 base score is 10.0 out of 10.