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.

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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
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