CVE-2021-47717

IntelliChoice eFORCE Software Suite 2.5.9 contains a username enumeration vulnerability that allows attackers to enumerate valid users by exploiting the 'ctl00$MainContent$UserName' POST parameter. Attackers can send requests with valid usernames to retrieve user information.

CVSS v4.0

6.9 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS

0.35% chance of exploitation in the next 30 days, 28th percentile

Published

2025-12-09

Updated

2026-04-07

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/50164

References

• CVE Record
• NVD entry

Related

• CVE-2021-47716
• CVE-2021-47718
• CVE-2021-47715
• CVE-2021-47719
• CVE-2021-47714
• CVE-2021-47720