What’s Vulnerable › Vulnerabilities

CVE-2021-36121

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-07-13 · updated 2026-06-17
• Weakness: CWE-434

Description

An issue was discovered in Echo ShareCare 8.15.5. The file-upload feature in Access/DownloadFeed_Mnt/FileUpload_Upd.cfm is susceptible to an unrestricted upload vulnerability via the name1 parameter, when processing remote input from an authenticated user, leading to the ability for arbitrary files to be written to arbitrary filesystem locations via ../ Directory Traversal on the Z: drive (a hard-coded drive letter where ShareCare application files reside) and remote code execution as the ShareCare service user (NT AUTHORITY\SYSTEM).

Affected products

• Echobh Sharecare: 8.15.5

References

• https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0001.md
• https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0001.md

Get alerted when CVE-2021-36121 or the next vulnerability affects your stack