by Kastro
Paper/Archive/CVE-2021-26608

CVE-2021-26608

handysoft HShell.dll — handysoft groupware arbitrary file download and execution vulnerability

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 48.4.484 × 209.7No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

An arbitrary file download and execution vulnerability was found in the HShell.dll of handysoft Co., Ltd groupware ActiveX module. This issue is due to missing support for integrity check of download URL or downloaded file hash.

Affected

ProductAffectedFixed inSource
HShell.dll1.7.4.5–CNA
HShell.dll2.0.3.5–CNA
HShell.dll4.0.1.6–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
krcert (CNA)8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

refboho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36239