Vulnerability Details : CVE-2021-26608
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.
Products affected by CVE-2021-26608
- cpe:2.3:a:handysoft:hshell:1.7.4.5:*:*:*:*:*:*:*
- cpe:2.3:a:handysoft:hshell:2.0.3.5:*:*:*:*:*:*:*
- cpe:2.3:a:handysoft:hshell:4.0.1.6:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-26608
0.31%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-26608
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
KrCERT/CC |
CWE ids for CVE-2021-26608
-
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.Assigned by: nvd@nist.gov (Primary)
-
The product uses a transmission protocol that does not include a mechanism for verifying the integrity of the data during transmission, such as a checksum.Assigned by: vuln@krcert.or.kr (Secondary)
References for CVE-2021-26608
-
https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36239
KrCERT/CC - KISA 인터넷 보호나라&KrCERTThird Party Advisory
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