CVE-2022-50800

medium

Description

H3C SSL VPN contains a user enumeration vulnerability that allows attackers to identify valid usernames through the 'txtUsrName' POST parameter. Attackers can submit different usernames to the login_submit.cgi endpoint and analyze response messages to distinguish between existing and non-existing accounts.

References

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5697.php

https://www.vulncheck.com/advisories/hc-ssl-vpn-na-username-enumeration-via-login-script-credential-verification

https://www.h3c.com

https://www.exploit-db.com/exploits/50742

Details

Source: Mitre, NVD

Published: 2025-12-30

Updated: 2026-04-15

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: High

CVSS v4

Base Score: 6.9

Vector: 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

Severity: Medium

EPSS

EPSS: 0.0003