Improper input validation in Microsoft Windows
CVE-2020-12388
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 Firefox < 76.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.035 (89.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.035 · change: +0.008
Affected products
- Microsoft Windows
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2020-16/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-17/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- packetstormsecurity.com/files/157860/Firefox-Default-Content-Process-DACL-Sandb… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-12388?
- CVE-2020-12388 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-2020-12388?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2020-12388 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.