Improper input validation in Ijinshan Cheetah Free Wifi

CVE-2020-13646

In Cheetah free WiFi 5.1, the driver file (liebaonat.sys) allows local users to cause a denial of service (BSOD) or possibly have unspecified other impact because of not validating input values from IOCtl 0x830020f8, 0x830020E0, 0x830020E4, or 0x8300210c.

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

EPSS: 0.004 (32.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-13646?
CVE-2020-13646 is a high-severity vulnerability in Ijinshan Cheetah Free Wifi, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2020-06-05.
How severe is CVE-2020-13646?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-13646 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.