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.

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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
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