CVE-2021-26608 is a critical arbitrary file download and execution vulnerability affecting the HShell.dll ActiveX module in handysoft Co., Ltd groupware, and potentially Microsoft Windows systems utilizing this component. The flaw, stemming from a lack of integrity checks for downloaded files or URLs, allows unauthenticated attackers to remotely execute arbitrary code with high impact on confidentiality, integrity, and availability. Despite its CVSS score of 9.8, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.7.4.5CPE matchmatch criteria | cpe:2.3:a:handysoft:hshell:1.7.4.5:*:*:*:*:*:*:* | ||
2.0.3.5CPE matchmatch criteria | cpe:2.3:a:handysoft:hshell:2.0.3.5:*:*:*:*:*:*:* | ||
4.0.1.6CPE matchmatch criteria | cpe:2.3:a:handysoft:hshell:4.0.1.6:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.