What is CVE-2021-26633?

CVE-2021-26633 is a high-severity vulnerability in Linux Kernel, classified under SQL Injection. CVSS score: 7.5/10. Published 2022-06-02.

How severe is CVE-2021-26633?

High severity. CVSS v3 base score is 7.5 out of 10.

SQL Injection in Linux Kernel

CVE-2021-26633

SQL injection and Local File Inclusion (LFI) vulnerabilities in MaxBoard can cause information leakage and privilege escalation. This vulnerabilities can be exploited by manipulating a variable with a desired value and inserting and arbitrary file.

Vulnerability class: SQL Injection

Published 2022-06-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000

Affected products

Linux Kernel
Maxb Maxboard
Max Yi Maxboard — versions unspecified

Weakness classification (CWE)

CWE-89 — SQL Injection

References

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

Frequently asked questions

What is CVE-2021-26633?: CVE-2021-26633 is a high-severity vulnerability in Linux Kernel, classified under SQL Injection. CVSS score: 7.5/10. Published 2022-06-02.
How severe is CVE-2021-26633?: High severity. CVSS v3 base score is 7.5 out of 10.