Username Enumeration Vulnerability in IntelliChoice eFORCE Software Suite
CVE-2021-47717

6.9MEDIUM

Key Information:

Vendor

Intellichoice

Status
Intellichoice Eforce Software Suite
Vendor
CVE Published:
9 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47717?

The IntelliChoice eFORCE Software Suite 2.5.9 is susceptible to a username enumeration vulnerability that enables attackers to identify valid usernames. By exploiting the 'ctl00$MainContent$UserName' POST parameter, malicious actors are able to send requests with known usernames and receive user information in response. This vulnerability poses a significant risk as it could lead to further attacks targeting user accounts.

Affected Version(s)

IntelliChoice eFORCE Software Suite 2.5.9.6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47717 - Proof of Concept

References

https://www.exploit-db.com/exploits/50164
exploit
https://www.eforcesoftware.com
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-56...
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
JSON
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CVE-2021-47717 : Username Enumeration Vulnerability in IntelliChoice eFORCE Software Suite