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).
Published 2021-07-13 14:15:09
Updated 2021-07-15 14:13:03
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Directory traversalExecute code

Exploit prediction scoring system (EPSS) score for CVE-2021-36121

0.54%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-36121

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
MEDIUM AV:N/AC:L/Au:S/C:P/I:P/A:P
8.0
6.4
NIST
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
NIST

CWE ids for CVE-2021-36121

References for CVE-2021-36121

Products affected by CVE-2021-36121

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