CVE-2021-26636: Maxboard Remote Code Execution

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-06-23 · updated 2026-06-17
Weakness: CWE-79

Description

Stored XSS and SQL injection vulnerability in MaxBoard could lead to occur Remote Code Execution, which could lead to information exposure and privilege escalation.

Affected products

MaxBoard: before 1.9.6.1 — fixed in 1.9.6.1

How to fix

Upgrade to a fixed version: MaxBoard 1.9.6.1. Check the vendor advisory for mitigations.

References

https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66781
https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66781

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