CVE-2021-36121 describes an unrestricted file upload vulnerability in Echo ShareCare 8.15.5, specifically within the Access/DownloadFeed_Mnt/FileUpload_Upd.cfm component. An authenticated attacker can exploit this by manipulating the 'name1' parameter to perform directory traversal, allowing arbitrary file writes to the Z: drive and achieving remote code execution as NT AUTHORITY\SYSTEM. This vulnerability carries a high CVSS score of 8.8 due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
8.15.5CPE matchmatch criteria | cpe:2.3:a:echobh:sharecare:8.15.5:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.