What is CVE-2021-26639?

CVE-2021-26639 is a high-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2022-08-17.

How severe is CVE-2021-26639?

High severity. CVSS v3 base score is 8.1 out of 10.

Improper input validation in Linux Kernel

CVE-2021-26639

This vulnerability is caused by the lack of validation of input values for specific functions if WISA Smart Wing CMS. Remote attackers can use this vulnerability to leak all files in the server without logging in system.

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

EPSS: 0.004 (33.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Linux Linux_kernel
Wisa Smart_wing_cms
Wisa Corp. Smart Wing Cms — versions unspecified

Weakness classification (CWE)

References

vuln@krcert.or.kr (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-26639?: CVE-2021-26639 is a high-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2022-08-17.
How severe is CVE-2021-26639?: High severity. CVSS v3 base score is 8.1 out of 10.