What is CVE-2021-26622?

CVE-2021-26622 is a critical-severity vulnerability in Genians Genian Nac, classified under Improper Input Validation. CVSS score: 9.6/10. Published 2022-03-25.

How severe is CVE-2021-26622?

Critical severity. CVSS v3 base score is 9.6 out of 10.

RCE in Genians Genian Nac

CVE-2021-26622

An remote code execution vulnerability due to SSTI vulnerability and insufficient file name parameter validation was discovered in Genian NAC. Remote attackers are able to execute arbitrary malicious code with SYSTEM privileges on all connected nodes in NAC through this vulnerability.

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

Published 2022-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.030 (87.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000

Affected products

Genians Genian Nac
Genians Co., Ltd Genian Nac Suite V4.0 — versions unspecified
Genians Co., Ltd Genian Nac V5.0 & Suite — versions unspecified
Microsoft Windows

Weakness classification (CWE)

References

www.krcert.or.kr/krcert/secNoticeView.do (Third Party Advisory, Broken Link)

Frequently asked questions

What is CVE-2021-26622?: CVE-2021-26622 is a critical-severity vulnerability in Genians Genian Nac, classified under Improper Input Validation. CVSS score: 9.6/10. Published 2022-03-25.
How severe is CVE-2021-26622?: Critical severity. CVSS v3 base score is 9.6 out of 10.