CVE-2021-42331

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

The “Study Edit” function of ShinHer StudyOnline System does not perform permission control. After logging in with user’s privilege, remote attackers can access and edit other users’ tutorial schedule by crafting URL parameters.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-285 CWE-862

Affected software

Vendor	Product	Versions
ShinHer Information Co., LTD.	ShinHer StudyOnline System	>= unspecified, <= 2021

References

https://www.twcert.org.tw/tw/cp-132-5201-dc534-1.htmlThird Party Advisory
https://www.twcert.org.tw/tw/cp-132-5201-dc534-1.htmlThird Party Advisory

Timeline

Published: Oct 15, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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