User Enumeration Vulnerability in H3C SSL VPN
CVE-2022-50800

6.9MEDIUM

Key Information:

Vendor

Hangzhou H3c Technologies

Status
H3c Ssl Vpn
Vendor
CVE Published:
30 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2022-50800?

The H3C SSL VPN is susceptible to a user enumeration vulnerability that enables malicious actors to discern valid usernames. By exploiting the 'txtUsrName' parameter in the login_submit.cgi endpoint, attackers can submit various username inputs and analyze the responses returned by the server. This allows them to differentiate between legitimate and non-existent accounts, potentially leading to further security breaches.

Affected Version(s)

H3C SSL VPN 1.1

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-2022-50800 - Proof of Concept

References

https://www.exploit-db.com/exploits/50742
exploit
https://www.h3c.com
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-56...
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-2022-50800 : User Enumeration Vulnerability in H3C SSL VPN