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CVE-2021-47717

21
FAUCET Score

CVE-2021-47717 describes a username enumeration vulnerability in IntelliChoice eFORCE Software Suite version 2.5.9. This flaw allows unauthenticated attackers to identify valid usernames by manipulating the 'ctl00$MainContent$UserName' POST parameter in requests. Rated with a CVSS score of 6.9 (Medium), the vulnerability has a low attack complexity and no user interaction is required, potentially leading to unauthorized information disclosure. While it has a high FAUCET Risk Score of 82/100, there is currently no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
IntelliChoiceIntelliChoice EFORCE Software Suite
2.5.9.6CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 4.0

6.9MEDIUM

CVSS: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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
24.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 13th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

eforcesoftware.com
exploit-db.com / exploits/50164
vulncheck.com / advisories/intellichoice-eforce-software-suite-username-enumeration
zeroscience.mk / en/vulnerabilities/ZSL-2021-5658.php